+15-V-1-a-regulated-power-supply


Posted on Aug 12, 2012

The supply receives + 20 Vdc from the rectifier/filter section. This is applied to pins 11 and 12 of the uA723, as well as to the collector of the 2N3055 series-pass transistor. The output voltage is sampled through R1 and R2, providing about 7 V with respect to ground at pin 4. The reference terminal at pin 6 is tied directly to pin 5, the noninverting input of the error amplifier. For fine trimming the output voltage, a potentiometer can be installed between R1 and R2. A 100-pF capacitor from pin 13 to pin 4 furnishes gain compensation for the amplifier.


+15-V-1-a-regulated-power-supply
Click here to download the full size of the above Circuit.

Base drive to the 2N3055 pass transistoris furnished by pin 10 of the uA 723. Since the desired output of the supply is 1 A. maximum current limit is set to 1.5 A by resistor Rsc whose value is 0.433 0. A 100-J




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Auto Microphone Muter
CD4040 Generating Long Time Delays Circuit
Bipolar transistor biasing
Tablet Reminder Uses Watch Module
Clap-Controlled Switch
GSM localizer without GPS Schematic
Robot Motor Control Schematic
SR63 holiday lights ASIC
A constant current source of the differential amplifier circuit
DC generator automatic voltage regulator circuit



Top