The Amp Garage

Thanks Ten Over & martin manning

Previously I understand exactly this but was not sure you were saying that

With my post of in series mosfet I was trying to say the same thing

Franco

With the voltage split equally between two MOSFET's in series, the voltages on the X-axis will be one-half and the power at each step will be one-half. The power will still peak at the mid-point, but it will be half the single MOSFET power. English isn't my language, please can you explain this thi...

They had said it was actually easier for them closer to full voltage as well as the more extreme bottom 1/3 voltage setting. Can someone verify or explain this? As far as I can know the mosfet are used in this application as Linear redoucers (something like a rheostat) I can agree that if you reduc...

One other way, less simple but I think working, will be to build a pair of complete VVR and to connect it in seires then adjust the first pot as the first VVR lower the voltage by 1/2 of what you require and the second one to reduce the remaining excess of voltage this way you are sure the power dis...

Unfortunately no till the second one don't blast

Franco

It is some time I'm working to a stereo amp based on a pair of VOX AC4 circuits (two different versions of the VOX AC4) in the same cabinet as to try to prevent ground problems I tried to read here and there and to collect a bit of documentation I ended with the intention to incorporate on each amp ...

Just for knowledge At the begin I didn't understand well why you want to use a pair of Mosfet in parallel for VVR for the same reason .... I can't imagine a tube amp needing parallel MOSFETs for VVR. however reading your post I remembered a circuit a friend sent to me some years ago Double Mosfet VV...

Does someone has the schematic corresponding to this HRM Layout ?


Thanks

Franco

Thanks again Steve

Franco

.... The schematic is not imho showing the jfet correctly .... I agree with you, the simbol that was used is the simbol of an SCR Diode As I'm not confident with Jfet and other Solid State components, if someone can put on the actual schematic where are placed the Source - Drain - Gate connections ...

Franco

p.s.:I aplogize, when I posted I linked a wrong version of the file, now it is correct

Ciao GAStan

May be you are interested on this
Franco

I decided to revise my 2W and 3W (Metal Film) Power Resistor Stencil using bot Color Bands and Numeric Values on each resistor



If you are interested here attached you can find the .vss Stencil file


Franco

To give a look to your old TU

Franco

I just verified with some friends, they know Piemme Elektra and are very satisfied also for this brand

Franco