Wednesday, January 17, 2018
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MJ2955 + IC 741 based 0-15 Volt Tracking dual Power Supply circuit with explanation

  The linear dual tracking power supply, shown in the schematic, provides 0-15 volts, at 1/4 amp, maximum, using a discrete transistor regulator with op-amp feedback to control the output voltage. The supply was constructed in 1975; the negative ouput voltage tracks the positive output voltage. With reference to the schematic, lamp, LP2, is a power-on indicator. ...

MC1466L based Power Supply 0-30V / 0-2A circuit

The basic requirements than one laboratorial power supply, it is to provide voltages and currents of operation that need the usual units, to have low output resistance, low noise, small ripple and good stabilisation. The above requirements are covered, from the circuit. Many power supply allocate electronic safety that him protects from destruction, when...


You can use this calculator to vary the value of the program resistor (R1) and output set resistor (R2) and calculate the output voltage for the LM317 / LM338 / LM350 family of three terminal adjustable regulators. This calculator will work for most voltage regulators with a reference voltage (VREF) of 1.25. Typically, the program resistor (R1) is 240...

L200 based Universal PSU 4A 0-24V circuit with explanation

Circuit :Volker Jeschkeit Description: A Universal Power supply based on the L200 regulator, which includes an outboard pass transistor to boost output currents up to 4 amps. Read more source Circuits/Power/universalpsu.htm Thank you.