Hello
Here are some pictures of my finished Nmos200 amp. I have used 2 pairs of IRFP240, +/- 50V power supply, upc1237 speaker protection, soft start, analog VU meters - based on project 55 from Rod Elliot.
Cheers
Here are some pictures of my finished Nmos200 amp. I have used 2 pairs of IRFP240, +/- 50V power supply, upc1237 speaker protection, soft start, analog VU meters - based on project 55 from Rod Elliot.
Cheers
Attachments
@ sakis
Yes there are indeed extra pair of mosfets. From the picture is not clear but they are of the PCB. The extra soure resistors are under the L shape aluminium bar and can not be seen on the picture. The extra gate resistors are visible on the picture. I've used the extra pair of mosfets because the amplifier will be used with 4 ohm speakers and I want to be on the safe side of SOA.
Power supply uses 500VA toroid with 2 x 35V secondary windings. Rectifiers are 35A/1000V metal blocks on the L shaped aluminium bar. It uses 2 x 10000uf/63V capacitors per chanell.
Cheers
Yes there are indeed extra pair of mosfets. From the picture is not clear but they are of the PCB. The extra soure resistors are under the L shape aluminium bar and can not be seen on the picture. The extra gate resistors are visible on the picture. I've used the extra pair of mosfets because the amplifier will be used with 4 ohm speakers and I want to be on the safe side of SOA.
Power supply uses 500VA toroid with 2 x 35V secondary windings. Rectifiers are 35A/1000V metal blocks on the L shaped aluminium bar. It uses 2 x 10000uf/63V capacitors per chanell.
Cheers
upc1237
dipsi111;2194234 upc1237 speaker protection[/QUOTE said:Ever triggered it?Do you have a schematic?
Regards
pls post the pcb layout
Attachment PCB Layout for NMOS,
have fun, Sound is nice, clear and transparent with deep powerful bass
Attachments
nmos200
sir,why input dc rail voltage is so high??and out put=(85*85)/(2*8)=450watt peak=225watt rms...in 8 ohms speaker..i think 1 more out put mosfet has to be added..
Attachment PCB Layout for NMOS,
have fun, Sound is nice, clear and transparent with deep powerful bass
sir,why input dc rail voltage is so high??and out put=(85*85)/(2*8)=450watt peak=225watt rms...in 8 ohms speaker..i think 1 more out put mosfet has to be added..
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