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Lockbox Powersupply

+/- 12 V powersupply

Courtesy/Thanks to: Scott Bernardi

Description: 12 plus minus 12 volt powersupply

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Files
lockbox_power scott bernardi.gif
   Schematics for teh lockbox powersupply
Parts used
TL431
   Programmable Shunt Regulator
LM7812
   3-Terminal 1A Positive Voltage Regulator
LM7912
   
2N3906
   PNP switching transistor
2N3904
   NPN switching transistor
TL074
   Low-Noise JFet-input Operational Amplifier
1N4001
   General Purpose Rectifiers