FREE
circuits!
Recently added diagrams and projects
September 30, 2010
Due to the low current drawing, the circuit can be supplied from 230Vac mains without a transformer. Supply voltage is reduced to 12Vdc by means of C1 reactance, a two diode rectifier cell D1 &... [more]
circuit from:http://www.extremecircuits.net/2009/07/220v-ac-lamp-toggle-switch.html
September 30, 2010
Here’s a project that could be useful this summer on the beach, to stop anyone touching your things left on your beach towel while you’ve gone swimming; you might equally well use it at the... [more]
circuit from:http://www.extremecircuits.net/2010/05/mini-high-voltage-generator.html
September 30, 2010
The modern mechanic switches are improved concerning of old technology. We need however many times to replacement some old switch or to check currents bigger than the durability of certain switches or simple we need... [more]
circuit from:http://www.extremecircuits.net/2009/08/on-off-touch-switch-circuit.html
September 30, 2010
This circuit consists of a Trailing Socket (also called Extension or Distribution Socket) or similar device where two, three or more sockets (depending on the box dimensions and on constructor's needs) will be powered only... [more]
circuit from:http://www.extremecircuits.net/2010/06/smart-trailing-socket.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
When running 12V electronic devices from lead-acid battery banks, the voltage to the appliance can vary from below 11V with discharged batteries, to well above 14V during charging. Many appliances will not tolerate such a... [more]
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]
All posts