Symmetrical power supply 3-20V


Posted on May 25, 2012

The compact 5 pin L165 IC general a stabilized symmetrical power supply from a single asymmetrical power supply. The output voltage is however, half of the input voltage. One needs to add the ripple filter capacitors C1, C2, C3 and C4 and some resistors for setting the symmetry. In constructing the circuit, place the capacitors C1 and C2 as close to the IC as possible.


Symmetrical power supply 3-20V
Click here to download the full size of the above Circuit.

On the other hand, place the capacitors C3 and C4 close to the output jacks. Make sure that the circuit lines on the pcb are properly dimensioned to handle high current levels. Current levels up to 3 amperes can flow through the circuit. Additionally, provide a proper heatsink for the L165 IC. The L165 IC can also be viewed as a voltage amplifier. It amplifies the voltage appearing at the junction between R1 and R2. One cas also replace the IC with TCA1365. However, when using the TCA IC, pins 3 and 4 have to be connected together. Also connect a 220pF capacitor between pins 5 and 6.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Advanced Volume control
Stereo balance tester
Wideband Active Rod Antenna
15V And 5V Car Battery Supply
800 To 1000Mhz Scanner Converter Circuit
Dynamic Microphone Amplifier
lm317 universal battery charger circuit
Gray Projects
plc circuit diagram
motion motor control servo system block
3volt fm transmitter for 88mhz
Digital frequency counter
Solar Cell Voltage Regulator
10A H-Bridge Motor Controller Circuit
Flyback converter circuit Clamp
FM radio tuning circuit circuit



Top