Here is a 7812 voltage regulator circuit, but this is not a power supply with a 12V output voltage and load current 1A. IC LM7812 only serves as the input voltage of an LM723 regulator IC. So this power supply circuit with a larger load current capability with a variable voltage at the maximum voltage of 6V.
Output voltage range of the 7812 voltage regulator circuit is 2.5V-6V with 6A-8A load current. Increasing load current through the transistor...
7812 Voltage Regulator Circuit
Friday, October 21, 2011
Wednesday, September 28, 2011
12V Power Supply Circuit Diagram
Here is a simple 12V power supply circuit is easily constructed without the circuit board at all. Simply, by connecting the inter-connection as schematically attached using cables or wires are properly shielded hardware. A beginner can assemble a 12V power supply schematic is well in half an hour.
12V power supply circuit uses a transformer as a 0-15V 3A AC input. Unregulated DC power supply voltage through a component built diode bridge and capacitor electrolyte. To obtain a regulated DC voltage required a 12V zener diode and a 2N3055 transistor with the maximum load current capability 3A. Thus, the power supply circuit providing fixed output voltage 12V.
12V Power Supply Circuit
12V power supply circuit uses a transformer as a 0-15V 3A AC input. Unregulated DC power supply voltage through a component built diode bridge and capacitor electrolyte. To obtain a regulated DC voltage required a 12V zener diode and a 2N3055 transistor with the maximum load current capability 3A. Thus, the power supply circuit providing fixed output voltage 12V.
12V Power Supply Circuit
ATX Power Supply Pinout
ATX power supply pinout is the configuration of the connector pin ATX power supply that is used on a computer mainboard. Each pin associated with the color of the cable used to represent their respective functions. Each serves as a contact with three voltage polarity, ie positive, negative, earth, the configuration data.
In general, the ATX power supply pinout is connected to the voltage +3.3 V, +5 V,-5V, +12 V,-12V and 0V (Ground). Connected with the data is a function OK and Power Supply Power ON. Power OK is a status signal generated by the power supply to notify the computer. That the DC operating voltages are within the ranges required for proper computer operation (+5 VDC power is Ok). Power Supply On (active low). Short this pin to GND to switch power supply ON, disconnect from GND to switch OFF. And -5 VDC (this is optional on newer ATX version 2.0 supplies. It is for use with older AT class expansion cards and can be omitted on newer units).
ATX Power Supply Circuit
In general, the ATX power supply pinout is connected to the voltage +3.3 V, +5 V,-5V, +12 V,-12V and 0V (Ground). Connected with the data is a function OK and Power Supply Power ON. Power OK is a status signal generated by the power supply to notify the computer. That the DC operating voltages are within the ranges required for proper computer operation (+5 VDC power is Ok). Power Supply On (active low). Short this pin to GND to switch power supply ON, disconnect from GND to switch OFF. And -5 VDC (this is optional on newer ATX version 2.0 supplies. It is for use with older AT class expansion cards and can be omitted on newer units).
ATX Power Supply Circuit
Friday, September 23, 2011
5V Power Supply Circuit
5V Power Supply Circuit - 7805
5V power supply circuit is needed by beginners as a hobby, or to provide voltage to a simple circuit. So he needed when needed, especially with regard to clean DC voltage or a regulated DC power supply.
The use of IC 7805 has become a common in use for the hobby, and 5V power supply circuit is very simple and easy to assemble. Only a few additional components for IC 7805 and its DC power supply, can produce a regulated 5V DC power supply.
Basic 5V Power
5V power supply circuit is needed by beginners as a hobby, or to provide voltage to a simple circuit. So he needed when needed, especially with regard to clean DC voltage or a regulated DC power supply.
The use of IC 7805 has become a common in use for the hobby, and 5V power supply circuit is very simple and easy to assemble. Only a few additional components for IC 7805 and its DC power supply, can produce a regulated 5V DC power supply.
Basic 5V Power
NiMH Charger Circuit
Microcontroller NiMH Charger Circuit
Here is a good NiMH charger circuit, in addition to the operation of the CPU controlled, it can also turn off automatically after 14 hours of full-time charging. Charging circuit is equipped with LED indicator display and RS232 connectors, if you want to be connected to an outside source. It's very easy to use.
On the CPU based NiMH charger circuit has the ease of setting in operation. Unlike conventional analog charger, POT simply controls the voltage
Here is a good NiMH charger circuit, in addition to the operation of the CPU controlled, it can also turn off automatically after 14 hours of full-time charging. Charging circuit is equipped with LED indicator display and RS232 connectors, if you want to be connected to an outside source. It's very easy to use.
On the CPU based NiMH charger circuit has the ease of setting in operation. Unlike conventional analog charger, POT simply controls the voltage
Tuesday, September 20, 2011
Universal Laptop Charger
Universal Laptop Charger Circuit
Universal laptop charger is roughly defined as a battery charger device that can generally be used to charge the battery on the laptop. However, of course, battery charger which followed the purchase of a new laptop is the most appropriate and good for your laptop. Because of this charger is a genuine, fully compatible with the specification of battery used.
As we know that laptop battery voltage is 19V DC, so that could be used for laptop battery charger,
Universal laptop charger is roughly defined as a battery charger device that can generally be used to charge the battery on the laptop. However, of course, battery charger which followed the purchase of a new laptop is the most appropriate and good for your laptop. Because of this charger is a genuine, fully compatible with the specification of battery used.
As we know that laptop battery voltage is 19V DC, so that could be used for laptop battery charger,
Tuesday, August 9, 2011
DC to AC Converter Circuit Diagram
DC to AC Converter Circuit Diagram
DC to AC converter circuit diagram is a device to convert DC power into AC power, which is usually known as AC inverter. Most of this circuit uses AC to DC transformer with an output AC voltage on the primary coil and comes with an AC filter.
DC to AC converter circuit diagram below is a simple AC inverter using 12V DC voltage as an input to the output voltage is 220V AC. The input voltage can be sourced from a battery voltage of 12V, which can be a
DC to AC converter circuit diagram is a device to convert DC power into AC power, which is usually known as AC inverter. Most of this circuit uses AC to DC transformer with an output AC voltage on the primary coil and comes with an AC filter.
DC to AC converter circuit diagram below is a simple AC inverter using 12V DC voltage as an input to the output voltage is 220V AC. The input voltage can be sourced from a battery voltage of 12V, which can be a
Sunday, August 7, 2011
Solar Tracker
Simple LDR Solar Tracker Circuit
As the name implies, here is a solar tracker DIY kit to track the sun automatically. Solar tracker is used in a solar panel in order to follow the movement of the sun to fill the position of the solar cell payload in order to obtain the optimum beam energy. Solar tracker circuit is quite compact, small, and works fine.
Solar tracker monitors the position of the sun using two Light Dependant Resistors (LDRs) and made the decision to move the solar
As the name implies, here is a solar tracker DIY kit to track the sun automatically. Solar tracker is used in a solar panel in order to follow the movement of the sun to fill the position of the solar cell payload in order to obtain the optimum beam energy. Solar tracker circuit is quite compact, small, and works fine.
Solar tracker monitors the position of the sun using two Light Dependant Resistors (LDRs) and made the decision to move the solar
Friday, August 5, 2011
12V Battery Charger Circuit
12V Battery Charger Circuit
Here is a 12V battery charger circuit because the circuit was designed specifically for gel cell 12 volts. This charger uses MAX712 IC because it meets almost all types of battery charging systems. MAX712 can charge fast for nickel-metal hydride (NiMH) and Nickel Cadmium (NiCd) battery.
Charging will be done quickly from a DC source at least 1.5V higher than the maximum battery voltage. This 12V battery charger circuit will first charge on fixed rate and then
Here is a 12V battery charger circuit because the circuit was designed specifically for gel cell 12 volts. This charger uses MAX712 IC because it meets almost all types of battery charging systems. MAX712 can charge fast for nickel-metal hydride (NiMH) and Nickel Cadmium (NiCd) battery.
Charging will be done quickly from a DC source at least 1.5V higher than the maximum battery voltage. This 12V battery charger circuit will first charge on fixed rate and then
Thursday, August 4, 2011
Lead Acid Battery Charger Circuit
Lead Acid Battery Charger Circuit with Voltage Analyzer
Here is a Lead acid battery charger circuit, which is equipped with a voltage analyzer. This is necessary because given that maintenance-free lead-acid batteries are common in vehicles, inverters, and UPS systems, and for this type of battery, which is sealed maintenance-free cannot be the serious examination of the type of acid, hygrometer cannot be used. So we need to check the terminal voltage to them to know the level of charge.
To
Here is a Lead acid battery charger circuit, which is equipped with a voltage analyzer. This is necessary because given that maintenance-free lead-acid batteries are common in vehicles, inverters, and UPS systems, and for this type of battery, which is sealed maintenance-free cannot be the serious examination of the type of acid, hygrometer cannot be used. So we need to check the terminal voltage to them to know the level of charge.
To
Wednesday, August 3, 2011
Mobile Charger Circuit
USB Powered Mobile Charger Circuit
With the following mobile charger circuit, you can charge your cellphone from a USB outlet. Battery charger is pretty easy to be built because simple and does not involve many components as can be seen in the schematic.
Although it seems simple, but USB powered mobile charger circuit can provide a regulated voltage of 4.7V to charge the cellphone battery. Generally, a USB outlet can provide 5V DC and 100mA currents to slow the charging for mobile phone
With the following mobile charger circuit, you can charge your cellphone from a USB outlet. Battery charger is pretty easy to be built because simple and does not involve many components as can be seen in the schematic.
Although it seems simple, but USB powered mobile charger circuit can provide a regulated voltage of 4.7V to charge the cellphone battery. Generally, a USB outlet can provide 5V DC and 100mA currents to slow the charging for mobile phone
Solar Battery Charger Circuit
Solar Battery Charger Circuit for Energy Saving
Solar battery charger circuit here is an application to fill the energy-saving inverter 12V battery. It was built using a 24V solar panel as an input. When the battery reaches a full charge, will automatically stop charging through the auto cut-off circuit built therein. Battery charger is built from a variable voltage regulator LM317.
How The Solar Battery Charger Circuit Works
Solar battery charger circuit using a variable voltage regulator
Solar battery charger circuit here is an application to fill the energy-saving inverter 12V battery. It was built using a 24V solar panel as an input. When the battery reaches a full charge, will automatically stop charging through the auto cut-off circuit built therein. Battery charger is built from a variable voltage regulator LM317.
How The Solar Battery Charger Circuit Works
Solar battery charger circuit using a variable voltage regulator
Friday, July 29, 2011
30V Regulated Power Supply
30V Regulated Power Supply Circuit
This is a simple 30V regulated power supply, but low-ripple power supply, and an excellent project if you're starting out in electronics. It will suit your needs for most of your bench testing and prototype applications.
The output of power supply is adjustable from 1.2 volts to about 30 volts. Maximum current is about 1.5 amps, which are also sufficient for most of your tinkering. It is relatively easy to build and can be pretty cheap if you have some or
This is a simple 30V regulated power supply, but low-ripple power supply, and an excellent project if you're starting out in electronics. It will suit your needs for most of your bench testing and prototype applications.
The output of power supply is adjustable from 1.2 volts to about 30 volts. Maximum current is about 1.5 amps, which are also sufficient for most of your tinkering. It is relatively easy to build and can be pretty cheap if you have some or
Thursday, July 28, 2011
Programmable Power Supply
Programmable Power Supply Circuit
In laboratory and experimental work, the source of electric energy is very important for the project. Most electronic products require power to function so power supplies are an integral part of any instrumentation system. Sometimes it is difficult to use a power supply when it comes to getting an accurate output value and often the more features on the power supply the more difficult it is to operate. When a power supply has all these different features, they
In laboratory and experimental work, the source of electric energy is very important for the project. Most electronic products require power to function so power supplies are an integral part of any instrumentation system. Sometimes it is difficult to use a power supply when it comes to getting an accurate output value and often the more features on the power supply the more difficult it is to operate. When a power supply has all these different features, they
DC to DC Converter Circuit
12V to 120V DC to DC Converter Circuit
Here is a step up DC to DC Converter circuit. The design is a simple saturation-limited push-pull converter. There is no special reason to use PNP transistors. I used them simply because I had a box full of them around. You may well turn over the design to use NPN transistors.
The 2SC945 is a bias switch for DC to DC Converter circuit to start up. When applying 12V power, this transistor applies enough bias to the power transistors to get the
Here is a step up DC to DC Converter circuit. The design is a simple saturation-limited push-pull converter. There is no special reason to use PNP transistors. I used them simply because I had a box full of them around. You may well turn over the design to use NPN transistors.
The 2SC945 is a bias switch for DC to DC Converter circuit to start up. When applying 12V power, this transistor applies enough bias to the power transistors to get the
Voltage Indicator
Automotive LED Voltage Indicator Circuit
The circuit is a voltage indicator for automotive. Connecting this circuit to the battery of your vehicle, you will always know at a glance the approximate voltage available. An indication of battery voltage is useful to the motorist for monitoring the battery's capacity to deliver current, and as a check on the efficiency of the dynamo or alternator.
Threshold voltages of the LEDs are set by two Zener Diodes (D6 & D10) plus two further diodes
The circuit is a voltage indicator for automotive. Connecting this circuit to the battery of your vehicle, you will always know at a glance the approximate voltage available. An indication of battery voltage is useful to the motorist for monitoring the battery's capacity to deliver current, and as a check on the efficiency of the dynamo or alternator.
Threshold voltages of the LEDs are set by two Zener Diodes (D6 & D10) plus two further diodes
USB Powered Battery Charger
Li-Ion USB Powered Battery Charger Circuit
One of the most extensive and convenient ways to connect electronic devices to the computer is a Universal Serial Bus (USB). However, the use of a separate power supply is still a lot of battery-powered units encountered for charging batteries. With a maximum power rating 5.25V/500 mA, USB bus power is a great source to build a USB powered battery charger for a single-cell Lithium-Ion battery.
The circuit below shows how to build a USB powered
One of the most extensive and convenient ways to connect electronic devices to the computer is a Universal Serial Bus (USB). However, the use of a separate power supply is still a lot of battery-powered units encountered for charging batteries. With a maximum power rating 5.25V/500 mA, USB bus power is a great source to build a USB powered battery charger for a single-cell Lithium-Ion battery.
The circuit below shows how to build a USB powered
Priority Switch
Appliance Priority Switch Circuit
Here is an appliance priority switch circuit were in Italy, the amount of mains power for most households is limited to three kW. With a hairdryer taking as much power as 1900W, I must check not to exceed the maximum power rating every time I switch on an electric appliance. Failing to do it may result in an unplanned walk out of the home, to restore the mains circuit breaker switch.
Appliance Priority Switch Circuit Diagram
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Here is an appliance priority switch circuit were in Italy, the amount of mains power for most households is limited to three kW. With a hairdryer taking as much power as 1900W, I must check not to exceed the maximum power rating every time I switch on an electric appliance. Failing to do it may result in an unplanned walk out of the home, to restore the mains circuit breaker switch.
Appliance Priority Switch Circuit Diagram
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Sealed Lead Acid Battery Charger
Sealed Lead Acid Battery Charger Circuit
Here's sealed lead acid battery charger circuit is for 12V Sealed Lead Acid (SLA) battery. It is actually a half-wave rectifier. It only charges the battery on every half cycle. The plug pack doesn't like this as it leaves residual flux in the core of the transformer and causes it to overheat.
Sealed Lead Acid Battery Charger Circuit Diagram
For Sealed Lead Acid battery charger status, there are a number of points we need to cover about the care and
Sealed Lead Acid Battery Charger
Here's sealed lead acid battery charger circuit is for 12V Sealed Lead Acid (SLA) battery. It is actually a half-wave rectifier. It only charges the battery on every half cycle. The plug pack doesn't like this as it leaves residual flux in the core of the transformer and causes it to overheat.
Sealed Lead Acid Battery Charger Circuit Diagram
For Sealed Lead Acid battery charger status, there are a number of points we need to cover about the care and
Sealed Lead Acid Battery Charger
Wednesday, July 27, 2011
Bench Power Supply
Bench Power Supply Circuit
Every electronics engineer is familiar with the anxiety of the moment when power is first applied to a newly-built circuit, wondering whether hours of work are about to be destroyed in a puff of smoke. A high-quality bench power supply with an adjustable current limit function is an excellent aid to steadying the nerves.
Unfortunately, bench power supply with good regulation performance is expensive and homebrew construction is not always straightforward. Many of
Every electronics engineer is familiar with the anxiety of the moment when power is first applied to a newly-built circuit, wondering whether hours of work are about to be destroyed in a puff of smoke. A high-quality bench power supply with an adjustable current limit function is an excellent aid to steadying the nerves.
Unfortunately, bench power supply with good regulation performance is expensive and homebrew construction is not always straightforward. Many of
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