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
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