Comments on: 50 W transistor amplifier

By: RICK

RICK — Sun, 13 Nov 2011 03:37:38 +0000

Cool CIRCUIT!!!!

By: seetharaman

seetharaman — Wed, 26 Oct 2011 19:10:06 +0000

TIP41/42 are good output transistors its gain may not be sufficient for driver application. You can try using them. you can use BD139/140 pair you can use BC327/337 8550/8050 CK100/CL100, 2N1711/ 2N1907 etc

By: JOMOTS

JOMOTS — Wed, 26 Oct 2011 03:58:32 +0000

HI again sir. I just want to ask if tip41 & tip42 can be substitute to bc286 & 287? thanks!!

By: seetharaman

seetharaman — Wed, 26 Oct 2011 00:03:02 +0000

Hi Anish you require MIC preamplifier with a voltage gain of atleast 100. Because the mic output is around 2 to 3mV. for rated output the above amplifier requirement is around 300mV RMS. Why do you want to use a sledge hammer to hit a fly. you can use amplifier with 1 watt or 2watt capacity that is all what you require.

By: Anish

Anish — Mon, 24 Oct 2011 13:36:11 +0000

Can this circuit directly used for an intercom? i.e, connecting a mic at the input?

By: seetharaman

seetharaman — Sat, 22 Oct 2011 02:29:29 +0000

Hi Jomots cannot be used as A733 is an NPN small gignal transistor. You can use BC558, BC158, 8550, BC327, BC328, 2N2907

By: jomots

jomots — Fri, 21 Oct 2011 09:55:20 +0000

hi sir,,can i use A733 insted of BC212

By: seetharaman

seetharaman — Wed, 24 Aug 2011 18:28:03 +0000

Hi Sarath try BD137 or 2N1711

By: SARATH

SARATH — Wed, 24 Aug 2011 04:22:37 +0000

I was trying to make fm 50 watt transmitter circuit.But i could not find the transistor BC286 .can you please help me what can i use insted of BC286

By: rupjyoti

rupjyoti — Tue, 05 Apr 2011 14:17:28 +0000

Thank u SEETHARAMAN sir.