Comments on: 150 Watt amplifier circuit http://www.circuitstoday.com/150-watt-amplifier-circuit An Authentic Resource on Electronics Thu, 09 Feb 2012 02:28:13 +0000 hourly 1 http://wordpress.org/?v= By: Boogie http://www.circuitstoday.com/150-watt-amplifier-circuit#comment-79175 Boogie Wed, 08 Feb 2012 05:10:58 +0000 http://www.circuitstoday.com/?p=176#comment-79175 I assembled two units for stereo but every time i test it, one unit blows!!! I tried to separate their power supply but still the same...( I already busted 10 pairs of TIP142 and TIP147) I continued troubleshooting but I can't find any defect in the circuit,The latest part replacement of the Darlington pairs were OK, I guess I must have bought fakes TIP 142 & 147.... The sound is good. I used this this Ckt. to drive my Subs and center speakers..... I'll send some pictures later.... I assembled two units for stereo but every time i test it, one unit blows!!! I tried to separate their power supply but still the same…( I already busted 10 pairs of TIP142 and TIP147) I continued troubleshooting but I can’t find any defect in the circuit,The latest part replacement of the Darlington pairs were OK, I guess I must have bought fakes TIP 142 & 147….
The sound is good. I used this this Ckt. to drive my Subs and center speakers….. I’ll send some pictures later….

]]> By: seetharaman http://www.circuitstoday.com/150-watt-amplifier-circuit#comment-79053 seetharaman Mon, 06 Feb 2012 06:33:31 +0000 http://www.circuitstoday.com/?p=176#comment-79053 Hi Rush the PCB shown is perfect the layout is also correct you can go ahead. Hi Panos the maximum output with +42-0--42volts DC can produce 200watts into 4 ohms load. Hi Noel 4700uF can be 63volts DC or more. C1 & C2 & C3 can be 25 volts HiToC use 2N3055 MJ2955 with BD139 and BD140 as darlington. Hi Rush the PCB shown is perfect the layout is also correct you can go ahead.
Hi Panos the maximum output with +42-0–42volts DC can produce 200watts into 4 ohms load.
Hi Noel 4700uF can be 63volts DC or more. C1 & C2 & C3 can be 25 volts
HiToC use 2N3055 MJ2955 with BD139 and BD140 as darlington.

]]> By: noel http://www.circuitstoday.com/150-watt-amplifier-circuit#comment-78930 noel Sat, 04 Feb 2012 04:34:01 +0000 http://www.circuitstoday.com/?p=176#comment-78930 1. can't u give the condenser What volt in use=4700uf ?v =C1,C2=10uf ?v =C3=100uf ?v 2. the transformer 5A can use more then 5amphere? 1. can’t u give the condenser What volt in use=4700uf ?v
=C1,C2=10uf ?v
=C3=100uf ?v
2. the transformer 5A can use more then 5amphere?

]]> By: T0C http://www.circuitstoday.com/150-watt-amplifier-circuit#comment-78762 T0C Thu, 02 Feb 2012 15:06:57 +0000 http://www.circuitstoday.com/?p=176#comment-78762 Will this work, because i'm too lazy to go out and buy the TIP142,147 now, won't making it with 2n3055(I know 2n3055 is not darlington but I've added another transistor to make it like that also without the other transistor it will work too) darlington do it? (of course 2n3055 with MJ2955) Will this work, because i’m too lazy to go out and buy the TIP142,147 now, won’t making it with 2n3055(I know 2n3055 is not darlington but I’ve added another transistor to make it like that also without the other transistor it will work too) darlington do it? (of course 2n3055 with MJ2955)

]]> By: panos http://www.circuitstoday.com/150-watt-amplifier-circuit#comment-78502 panos Sat, 28 Jan 2012 14:50:30 +0000 http://www.circuitstoday.com/?p=176#comment-78502 hi ser,i am panos from greece and i want you to tell me the maximum rms watage i can take of this amplifier. hi ser,i am panos from greece and i want you to tell me the maximum rms watage i can take of this amplifier.

]]> By: samshith triprayar http://www.circuitstoday.com/150-watt-amplifier-circuit#comment-78131 samshith triprayar Thu, 19 Jan 2012 14:08:50 +0000 http://www.circuitstoday.com/?p=176#comment-78131 hi sir, i try this amp. I'am very sad this is not woking. D1 and D2 and R5and R3 is very very hot hi sir,
i try this amp. I’am very sad this is not woking.
D1 and D2 and R5and R3 is very very hot

]]> By: jambebe http://www.circuitstoday.com/150-watt-amplifier-circuit#comment-77953 jambebe Mon, 16 Jan 2012 07:48:07 +0000 http://www.circuitstoday.com/?p=176#comment-77953 sir .. for this circuit that you posted is it necessary or do we need to add an preamplifier ? if yes how ? thanks sir .. for this circuit that you posted is it necessary or do we need to add an preamplifier ? if yes how ? thanks

]]> By: Rush007 http://www.circuitstoday.com/150-watt-amplifier-circuit#comment-77530 Rush007 Wed, 11 Jan 2012 16:54:11 +0000 http://www.circuitstoday.com/?p=176#comment-77530 Sir..... If i using +/- 50 volt DC power supply its need to be change R6 value?? Sir….. If i using +/- 50 volt DC power supply its need to be change R6 value??

]]> By: normzhie http://www.circuitstoday.com/150-watt-amplifier-circuit#comment-77513 normzhie Wed, 11 Jan 2012 10:37:54 +0000 http://www.circuitstoday.com/?p=176#comment-77513 sir can i connect another pair of tip142 and 147 in a parallel connection. what will happen the rms will be increases? thanks sir can i connect another pair of tip142 and 147 in a parallel connection. what will happen the rms will be increases? thanks

]]> By: Rush007 http://www.circuitstoday.com/150-watt-amplifier-circuit#comment-77429 Rush007 Mon, 09 Jan 2012 19:33:16 +0000 http://www.circuitstoday.com/?p=176#comment-77429 Thanks a lot Sir can i refer below mentioned URL. http://www.diyaudiotr.com/islecler/tammetin.php?metinid=6&durum=e#sonyorum Thanks again & sorry for continues asking questions to you...... Thanks a lot Sir

can i refer below mentioned URL.

http://www.diyaudiotr.com/islecler/tammetin.php?metinid=6&durum=e#sonyorum

Thanks again & sorry for continues asking questions to you……

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