Schematics > Power > Voltage Inverter II
Voltage Inverter IIThis simple and inexpensive circuit can produce a dual (positive and negative)
voltage from a single supply input. It is therefore extremely useful for
powering opamp and other circuits that require a dual voltage from a single
battery. The circuit will operate at an input voltage from around 5V to 20V and
produce a output from +-2.5V to +-10V.
Schematic
Parts
| Part |
Total Qty. |
Description |
Substitutions |
| R1 |
1 |
1M Linear Pot |
|
| C1,C2 |
2 |
15uf 25V Electrolytic Capacitor |
|
| U1 |
1 |
LM380 Audio Amp Chip |
|
| MISC |
1 |
Heatsink For U1, Binding Posts (For Input/Output),
Wire, Board |
|
Notes
1. U1 dissipates around 1W and will therefore require a heatsink.
2. R1 is used to equalize the outputs. The first time you use the circuit, it
should be set to mid range and then adjusted with the aid of a voltmeter.
Measure each output while adjusting. The circuit is calibrated when both outputs
read the same voltage (either positive or negative).
Title: Voltage Inverter II
Source: www.aaroncake.net
Published on: 2005-02-03
Reads: 604
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