Mooly-amp SSR
Hi
It's been good to see this thread up again, despite the O/T flak.
I was interested in your version of the SSR, (and the amp ,of course) though last I saw, you referred to Michael Bean's post #22 in
Bonsai's relay thread. From your pic, I assumed you did use the same circuit but different parts as you commented.
I cast about at Element 14 and couldn't locate anything like AVAGO AEER-621 series optocouplers. Perhaps my eyesight is that bad,
Would you be able to give an option or part No. I can try to use at E14's UK or local outlet? (Now identified as "formerly known as Farnell"
}
Hi
It's been good to see this thread up again, despite the O/T flak.
I was interested in your version of the SSR, (and the amp ,of course) though last I saw, you referred to Michael Bean's post #22 in
Bonsai's relay thread. From your pic, I assumed you did use the same circuit but different parts as you commented.
I cast about at Element 14 and couldn't locate anything like AVAGO AEER-621 series optocouplers. Perhaps my eyesight is that bad,
Would you be able to give an option or part No. I can try to use at E14's UK or local outlet? (Now identified as "formerly known as Farnell"
}
Hi Ian.
It seems Farnell no longer stock them,
ASSR-V621-002E - AVAGO TECHNOLOGIES - SSR, 15UA, 6.5V, DIP8 | Farnell United Kingdom
There must be many similar devices but I wouldn't know any numbers without researching them.
It seems Farnell no longer stock them,
ASSR-V621-002E - AVAGO TECHNOLOGIES - SSR, 15UA, 6.5V, DIP8 | Farnell United Kingdom
There must be many similar devices but I wouldn't know any numbers without researching them.
Thanks indeed, Mooly, for the express service! I think I can work from there.
Whilst at the keyboard. I'm reminded of your following thread on the necessary power requirement for domestic audio.
I'm sure there's a niche for a high quality 30 watter and there's a mass of us sitting back and waiting for the day when
one turns up on the forum. Maybe even an unofficial competition to turn out the best sound/pound at that power?
'Could be interesting
Anyway, could I ask that you keep that one in mind for when you progress with the current Hexfet scheme? The savings
could be significant and quite tempting with some of the small cases and constructional options available cheaply now.
Whilst at the keyboard. I'm reminded of your following thread on the necessary power requirement for domestic audio.
I'm sure there's a niche for a high quality 30 watter and there's a mass of us sitting back and waiting for the day when
one turns up on the forum. Maybe even an unofficial competition to turn out the best sound/pound at that power?
'Could be interesting
Anyway, could I ask that you keep that one in mind for when you progress with the current Hexfet scheme? The savings
could be significant and quite tempting with some of the small cases and constructional options available cheaply now.
I've quite a few ideas floating around and have been getting into LTspice a bit more these last few months.
A new PC is causing me problems at the moment though (software wise with LTspice being one of them).
Slowly rebuilding the system up again this time from a clean install of W7 pro 64 bit and using Acronis at each stage so I can undo anything that goes wrong. It kept coming up with error messages about various folders and settings that couldn't be created. When it opened it was a screen full of tiles... and all this on default settings.
I've put W7 on a spare laptop just to try and LTspice runs straight off with no problems.
So a clean install and we will try again eventually
A new PC is causing me problems at the moment though (software wise with LTspice being one of them).
Slowly rebuilding the system up again this time from a clean install of W7 pro 64 bit and using Acronis at each stage so I can undo anything that goes wrong. It kept coming up with error messages about various folders and settings that couldn't be created. When it opened it was a screen full of tiles... and all this on default settings.
I've put W7 on a spare laptop just to try and LTspice runs straight off with no problems.
So a clean install and we will try again eventually
The circuit in post #1 is correct, although not shown on that diagram (because I forgot to draw it) is a 10 ohm 2 watt resistor across the output inductor.
Nothing has changed since that time, the circuit is a complete tried and tested design that has been in daily use for the last 6 or 7 years.
dear mooly
can i use mosfet transistor irf830 and irf 9630 in place of 2sk1056 and 2sj162.
thank you yours masood
The amp was really designed for the lateral FET's and I have not evaluated the performance using HEXFET's.
That said they will certainly work but you MUST include a vbe (or vgs) multiplier. This must be attached to the main heatsink. Beyond that I wouldn't like to say because the amp was designed from the ground up to use laterals. It would need re-optimising to get the best performance from the HEXFET's.
That said they will certainly work but you MUST include a vbe (or vgs) multiplier. This must be attached to the main heatsink. Beyond that I wouldn't like to say because the amp was designed from the ground up to use laterals. It would need re-optimising to get the best performance from the HEXFET's.
dear mooly
t is request you to send me the pcb copper side of 200w amplifier using two npn and two pnp mosfet transistors.i will highly obliged if you can this.sorry for not expressing my feelings.thanking you
yours ever masood
dear mooly,
thanks for reply but give me any source .thanks in anticipating reply my email is khan.shahid251@gmail.com
yours ever masood
thanks for reply but give me any source .thanks in anticipating reply my email is khan.shahid251@gmail.com
yours ever masood
DEAR ALEX MM,
PLZ SEND ME THE PCB COPPER SIDE OF PCB USING TWO PAIR OF 2SK1058 AND 2SJ162 THANKS ALOT YOURS MASOOD
