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Power supply circuit diagrams
August 4, 2010
In this small switching power supply, a Schmitt trigger oscillator is used to drive a switching transistor that supplies current to a small inductor. Energy is stored in the inductor while the transistor is on,... [more]
August 4, 2010
The high current regulator below uses an additional winding or a separate transformer to supply power for the LM317 regulator so that the pass transistors can operate closer to saturation and improve efficiency. For good... [more]
August 4, 2010
While smoke alarms are quite cheap devices, the cost of 9V batteries quickly exceeds their purchase price. Added to that is the irritation of random beeps from the alarm as the battery reaches the end... [more]
circuit from:http://www.extremecircuits.net/2010/05/smoke-alarm-battery-life-extender.html
August 4, 2010
Volt regulators such as the LM708, and LM317 series (and others) sometimes need to provide a little bit more current then they actually can handle. If that is the case, this little circuit can help... [more]
circuit from:http://www.extremecircuits.net/2009/08/ampere-or-current-booster-circuit.html
August 4, 2010
There are many circuits for low voltage regulators. For higher voltages, such as supplies for valve circuits, the situation is different. That’s why we decided to design this simple regulator that can cope with these... [more]
circuit from:http://www.extremecircuits.net/2010/06/high-voltage-regulator-with-short.html
August 4, 2010
This circuit is not an absolute novelty, but it is simple, reliable, "rugged" and short-proof, featuring variable voltage up to 24V and variable current limiting up to 2A. You can adapt it to your own... [more]
circuit from:http://www.extremecircuits.net/2009/06/variable-dc-power-supply.html
August 4, 2010
An increasing number of appliances draw a very small current from the power supply. If you need to design a mains powered device, you could generally choose between a linear and a switch-mode power supply.... [more]
circuit from:http://www.extremecircuits.net/2010/05/transformerless-5-volt-power-supply.html
August 4, 2010
This circuit of power supply, is very simple and easy to built, it can be assembled on a general-purpose PCB, finding its materials is very easy and cost-small. The output voltage is stabilized and is... [more]
circuit from:http://www.extremecircuits.net/2009/07/stabilized-power-supply-circuit.html
August 4, 2010
This power supply was designed for use with the ‘Simple hybrid amp’ published elsewhere in this issue. It is of course suitable for use in other applications as well. We’ve used a cascade generator for... [more]
circuit from:http://www.extremecircuits.net/2010/05/quad-power-supply-for-hybrid-amplifier.html
August 4, 2010
This current-limiting circuit, shown in this example as part of a small bench power supply, could in principle be used in conjunction with any dual-rail current source. The part of the circuit to the left... [more]
circuit from:http://www.extremecircuits.net/2010/05/adjustable-current-limit-for-dual-power.html
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