LM317T Voltage Regulator with Pass Transistor

Demonstrating the behavior of Variable Voltage Regulator (VVR) when turned on/off via a footswitch. An Omron 5V relay, p/n: G5A-234P-DC5, was used to switch the VVR by lifting the 100K resistor between the VVR Pot and ground. The referenced relay is DPDT, but a SPDT relay would suffice. At the time of this posting, this amp build is in progress. More detail here: sites.google.com Questions/Comments, post here, or email me via link at haasamps.com



http://www.youtube.com/watch?v=g6Mda1ql5Y8&hl=en