hello sir ...
pls tel me how can i add clip led in my amp..??
Use this circuit
Attachments
Hello Mr APEX, i have many transistors PNP. What can be able modfication from emitor follower to colector fllwr this final.....???
Do You want QUASI PNP output stage?
thanks for the amplifier schematics. i am new to building amps.i have some queries
1 what are the rail voltages for driving 2 ohm load & using 4 pairs of o/p transistors per channel.what else i have to change.( i will be bridging two such channels to drive 4 ohm load ).
2. what will be resulting power in bridge mode when driving 4 ohm load
plz look at this link
http://www.electronica-pt.com/circuitos/en/audio-amplifiers/44-audio-amplifier-90-100w-with-2n3773.html
3. is the above ckt class b or class ab?
4. what is the differnce in qualitywise between the above design & ur design
plz dont be offended i am only a mechanical engineer
please reply to all my queries
1 what are the rail voltages for driving 2 ohm load & using 4 pairs of o/p transistors per channel.what else i have to change.( i will be bridging two such channels to drive 4 ohm load ).
2. what will be resulting power in bridge mode when driving 4 ohm load
plz look at this link
http://www.electronica-pt.com/circuitos/en/audio-amplifiers/44-audio-amplifier-90-100w-with-2n3773.html
3. is the above ckt class b or class ab?
4. what is the differnce in qualitywise between the above design & ur design
plz dont be offended i am only a mechanical engineer
please reply to all my queries
mje15032/33=TIP???
for +-75 to 80v any substitute for mje15032/33?
I don't think the BD139/140 are rated at high enough voltage to work at ±65V, nor are the TIP 41C/42C.
for +-75 to 80v any substitute for mje15032/33?
"for +-75 to 80v any substitute for mje15032/33? "
That's a pretty good part, and it shouldn't be too hard to find.
The NJW 0281/0302 would make a good substitute. The ON Semi price reference is $0.93 vs $0.61 for the MJE 15032/33.
http://www.onsemi.com/pub_link/Collateral/NJW0281-D.PDF
That's a pretty good part, and it shouldn't be too hard to find.
The NJW 0281/0302 would make a good substitute. The ON Semi price reference is $0.93 vs $0.61 for the MJE 15032/33.
http://www.onsemi.com/pub_link/Collateral/NJW0281-D.PDF
I don't think the BD139/140 are rated at high enough voltage to work at ±65V, nor are the TIP 41C/42C.
Yes, but with MJEs will work at +/-65V, only I suggest 2N5551 instead BC546.
Yap! you're right. it is 40V to be precise. Thanks for correcting.I don't think the BD139/140 are rated at high enough voltage to work at ±65V, nor are the TIP 41C/42C.
Best regard
driver
what do you think is the suitable driver for this amp on this site???
Crown - The Professional Choice
any suggestions?
what do you think is the suitable driver for this amp on this site???
Crown - The Professional Choice
any suggestions?
pnp output
care to share your quasi pnp output.
thanks
Do You want QUASI PNP output stage?
care to share your quasi pnp output.
thanks
care to share your quasi pnp output.
thanks
You can use same circuit for quasi pnp output, just replace all pnp transistors with npn and all npn replace with pnp, revert diode polarity and use revert +/- rail voltage polarity and you get quasi pnp amp.
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