 | VARIABLE CURRENT SOURCE,100 MA TO 2 AMP
The output current is set by the resistor R in the collector of Tr2, which may be varied to offer a range of output currents from 100 mA to 2 A with a fine control by means of VR3 which varies the ref ...
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 | SIMPLE POWER SUPPLY
This power supply delivers plus and minus 9 V to replace two 9-V batteries. The rectifier circuit is actually two separate full-wave rectifiers fed from the secondary of the transformer. One full-wave ...
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 | REGULATED CHARGE PUMP
The dc-dc converter substitutes a voltage tripler in place of the external inductor and the diode thats typically associated with the switching regulator, IC1. Inverting and noninverting amplifiers in ...
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 | EFFICIENT NEGATIVE VOLTAGE REGULATION
Many applications require highly efficient negative-voltage post regulators with low dropout voltage in switch-mode supplies.A way to provide good negative-voltage regulation is with a low-dropout pos ...
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 | +15 V 1-A REGULATED POWER SUPPLY
The supply receives +20 Vdc from the rectifier/filter section. This is applied to pins 11 and 12 of the ma723, as well as to the collector of the 2N3055 series-pass transistor. The output voltage is s ...
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