I'm hard at work rehabbing an Ampex 601 preamp module. Most of the work is done, but now I want to build a regulated DC power supply for the filament circuit.
A fellow modder was kind enough to give me a schematic for the circuit:
[IMGDEAD]http://thegoldenbears.net/images/filamentsupply.jpg[/IMGDEAD]
Makes sense to me, more or less. My real question is about heatsinking the LM350 regulator: The tab on the regulator is punched to allow it to be connected to a heatsink, but is also paralleled to the "Voltage out" pin. Would connecting this tab to a heatsink, and connecting the heatsink to the chassis, effectively short the output to ground? A former poster here:
Aikido Power Supply
cautions to isolate LM350 from heatsink and chassis, so clearly there's something here I'm misunderstanding.... Excuse my inexperience, this is my first stab at such a project.
Thanks,
Seth
A fellow modder was kind enough to give me a schematic for the circuit:
[IMGDEAD]http://thegoldenbears.net/images/filamentsupply.jpg[/IMGDEAD]
Makes sense to me, more or less. My real question is about heatsinking the LM350 regulator: The tab on the regulator is punched to allow it to be connected to a heatsink, but is also paralleled to the "Voltage out" pin. Would connecting this tab to a heatsink, and connecting the heatsink to the chassis, effectively short the output to ground? A former poster here:
Aikido Power Supply
cautions to isolate LM350 from heatsink and chassis, so clearly there's something here I'm misunderstanding.... Excuse my inexperience, this is my first stab at such a project.
Thanks,
Seth