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DC power supply circuit diagrams
September 30, 2010
This circuit idea is certainly not new, but when it comes to making a trade-of between using a small, short-circuit proof transformer or a capacitive voltage divider (directly from 230 V mains voltage) as the... [more]
circuit from:http://www.extremecircuits.net/2010/05/12v-fan-directly-on-220v-ac.html
September 30, 2010
Here is the circuit diagram of regulated power supply. It is a small power supply that provides a regulated voltage, adjustable between 1.5 and 35 volts at 1 ampere. This circuit is ready to use,... [more]
circuit from:http://www.extremecircuits.net/2009/10/easy-way-to-power-your-projects-here-is.html
September 30, 2010
48 V ‘phantom’ powering has become the standard for professional condenser microphones. The supply (or rather bias) voltage is applied over both wires of the balanced screened cable via two 6k8 resistors (see reference [1])... [more]
circuit from:http://www.extremecircuits.net/2010/05/48v-phantom-microphone-power-supply.html
September 30, 2010
This circuit is a small +5V power supply, which is useful when experimenting with digital electronics. Small inexpensive wall tranformers with variable output voltage are available from any electronics shop and supermarket. Those transformers are... [more]
circuit from:http://www.extremecircuits.net/2010/01/5v-regulated-power-supply-circuit.html
September 30, 2010
Here is the simple virtual ground circuit based on discrete components. This simple design comes from miniaturization guru Sijosae. Is to make a buffer from generic discrete components. The transistors can be most any complementary... [more]
circuit from:http://www.extremecircuits.net/2009/07/discrete-virtual-ground-circuit.html
September 30, 2010
This simple unit provides a dual-rail variable output ranging from ±2.5V to ±15Vdc with precise tracking of the positive and negative output voltages, still retaining the current limiting and short-proof capabilities of the "master" circuit.... [more]
August 4, 2010
This Power Supply is suitable for the Modular Burglar Alarm. However, it has other applications. It is designed to provide an output of 12-volts, with a current of up to 1-amp. In the event of... [more]
August 4, 2010
This is a 1-amp variable-voltage PSU. It adjusts from about 3v to 24v: and has the added feature that you can limit the maximum output current. This is invaluable when (for example) you power-up a... [more]
August 4, 2010
This circuit allows you to set a limit on the maximum output current available from your PSU. It's very useful when you power-up a project for the first time - or carry out a soak-test.... [more]
August 4, 2010
Here they exist two regulator circuits, that use the IC L200, as regulator of voltage and current, the company SGS-Thomson, which give these circuits. In circuit Fig.1, we can regulate the output voltage, with the... [more]
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