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
Friday, July 29, 2011
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
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