Posts Tagged ‘MJ2955’



MJ2955 Switching Power Supply 12V 10Amp

Thursday, August 16th, 2007

The switching power supply provides 12 volts, at 10 amps, maximum, using a discrete transistor regulator with an op-amp functioning as a comparator in the feedback circuit. With reference to the schematic, the front panel power-on light is not shown. There is no adjustable current limiter in this unit, although R1, R2, R3, Q2, R8, [...]

Increasing Regulator Current by 78XX +MJ2955

Saturday, July 28th, 2007

Notes: Although the 78xx series of voltage regulators are available with different current outputs, you can boost the available current output with this circuit. A power transistor is used to supply extra current to the load the regulator, maintaining a constant voltage. Currents up to 650mA will flow through the regulator, above this value and [...]

Boosting Regulator Current for IC 78xx by MJ2955

Friday, May 25th, 2007

Source :: http://www.zen22142.zen.co.uk/Circuits/Power/boosti.htm IC 78xx series of voltage regulators are available with different current outputs, you can boost the available current output with this circuit. A power transistor is used to supply extra current to the load the regulator, maintaining a constant voltage. Currents up to 650mA will flow through the regulator, above this value [...]