Comments on: Three transistor audio amplifier

By: allan

allan — Sat, 01 Oct 2011 02:00:03 +0000

hi can i ask if how much capacity of an amplifier would i use in a 400W speaker??? and should i install a capacitor on my speaker??? how much capacity should i put on the speaker??? pls i need your advice…tnx

By: seetharaman

seetharaman — Wed, 27 Jul 2011 10:26:25 +0000

Hi Kiran being at Bangalore you will get it from Texonic. you can use BEL100P for Q2 and BEL100N for Q1. You can use BD135/136 2N2905/2N1711. etc etc even BEL187/188 also can be used.

By: vysakh

vysakh — Mon, 25 Jul 2011 11:16:23 +0000

i think
you can use 2906 instead of 2905

By: vysakh

vysakh — Mon, 25 Jul 2011 11:13:13 +0000

no,you can’t use as a replace. one is a pnp and another is npn transistor.

By: kiran

kiran — Mon, 25 Jul 2011 10:59:30 +0000

hi!!!!!!
can i use the same transistor 2n2905 insted of 2n3053 for my
circuit?because i did not get it in sp road ,bangalore.
please can you reply me fast.

thankyou,
from kiran

By: Darexs

Darexs — Sun, 17 Apr 2011 21:10:27 +0000

pls i need fm transmitter circuit diagrams thanks

By: meydey

meydey — Thu, 24 Mar 2011 12:33:26 +0000

Can i ask a question..
our assignment is to make a combinational circuit of BJT and FET.. at first we are to submit an amplier circuit with three stages.. and we pass the circuit above.. ^^,
now me must make that circuit a combination of BJT and FET..
atlease one of the BJT transistor becomes FET..

By: hager

hager — Sat, 19 Mar 2011 13:38:07 +0000

please can u give me more details obout circuit explaining more ,thanks .

By: Seetharaman

Seetharaman — Sat, 04 Dec 2010 10:58:16 +0000

Hi BK Kwon please refer my comment dated 30th nov. use 10k pot.

By: Bk Kwon

Bk Kwon — Fri, 03 Dec 2010 08:20:25 +0000

hi i want to ask one question.
in upper circuit, i wanna make sound controller
i think that circuit need Potentiometer.
so what do i have to do…?