Goodizzy
Active member
Good morning,
I have been reading over a few posts regarding operating several REDD.47 line amps from a single power supply. I had a few questions I'd be most appreciative if anyone could answer.
I will be constructing these point-to-point and with the original OA2 regulated supply. The power transformer I have is a centre-tapped LT/HT, 320/350V rated at 1A. The 6.3V supply is rated at 5A. Massive!
- The HT supply IN to the line amps should come directly off the first stage filter cap? (In this case 47uf 1000V).
- Will I need to adjust RC filter network values inside the line amps to accomodate between two and four amps off a single rectifier?
- Can I add another 1K-40uf RC filter in front of all the line amps to drop voltage closer to 380V? Or a high wattage dropping resistor?
-Should snubbers be placed across rectifier AC supply? 100nf 275V is what I had read?
I've downloaded and used PSUD2 to simulate some of this. (Or at least try)
I'd appreciate any help anyone may be able to provide. This site is a fantastic resource. Thanks!
I have been reading over a few posts regarding operating several REDD.47 line amps from a single power supply. I had a few questions I'd be most appreciative if anyone could answer.
I will be constructing these point-to-point and with the original OA2 regulated supply. The power transformer I have is a centre-tapped LT/HT, 320/350V rated at 1A. The 6.3V supply is rated at 5A. Massive!
- The HT supply IN to the line amps should come directly off the first stage filter cap? (In this case 47uf 1000V).
- Will I need to adjust RC filter network values inside the line amps to accomodate between two and four amps off a single rectifier?
- Can I add another 1K-40uf RC filter in front of all the line amps to drop voltage closer to 380V? Or a high wattage dropping resistor?
-Should snubbers be placed across rectifier AC supply? 100nf 275V is what I had read?
I've downloaded and used PSUD2 to simulate some of this. (Or at least try)
I'd appreciate any help anyone may be able to provide. This site is a fantastic resource. Thanks!
