First amp I built was a TIP41/TIP42 based that did not use NFB. Not very powerful, had decent sound though. You can find it here
I've torn this one down though for a much better one which I have also designed. This one uses TIP35/TIP36 on the drivers, and two pairs of TIP42/TIP41 as preamp and middle stages. This design does use NFB, sounds much cleaner and is much more powerful. After blasting this amp through a two ohm load for three hours, the heatsink measured only 103 degrees F. I've just wound a toroid transformer because I plan to use it as a subwoofer amp in my car. The part count is fairly low considering its power and is 100% discrete component, no op amps whatsoever. If there is enough interest I will make schematics using MS-Paint and post pictures.
I've torn this one down though for a much better one which I have also designed. This one uses TIP35/TIP36 on the drivers, and two pairs of TIP42/TIP41 as preamp and middle stages. This design does use NFB, sounds much cleaner and is much more powerful. After blasting this amp through a two ohm load for three hours, the heatsink measured only 103 degrees F. I've just wound a toroid transformer because I plan to use it as a subwoofer amp in my car. The part count is fairly low considering its power and is 100% discrete component, no op amps whatsoever. If there is enough interest I will make schematics using MS-Paint and post pictures.
Member
Joined 2002
I have that exact same transister tester as you do in the last photo on the bottem. I love mine. works awsome.
Yep, I couldn't live without it, mine is a RadioShack, it's probably sold under different brands.
I think many mught be interested in ur schematics including me. This forum is by the fanatics, for the fanatics.
MP
MP
Ok, I'm at work now so I'll have to make schematics later tonight, hopefully one of you guys can try building it and tell me what you think. This is what I can tell you from here...
Part count:
6 transistors
2 trimmer pots
4 diodes
2 capacitors
7 resistors
-Closed loop voltage gain is around 300, current gain is much higher
-Absolutely no hum or hiss when idle, even on a breadboard
-It does not require a regulated supply
-It should run on anything from 5-0-5 to 75-0-75
-Bias settings are unaffected by supply voltages so you don't have to keep adjusting them
-It can be played as low as can possibly be heard and still sounds clean so my guess is crossover distortion is low
-Cost of parts excluding heatsink and power supply is less than $10
-It can drive a 2 ohm load at lower voltages with no problem
I will work on getting pics online, schematics will be up shortly after
Part count:
6 transistors
2 trimmer pots
4 diodes
2 capacitors
7 resistors
-Closed loop voltage gain is around 300, current gain is much higher
-Absolutely no hum or hiss when idle, even on a breadboard
-It does not require a regulated supply
-It should run on anything from 5-0-5 to 75-0-75
-Bias settings are unaffected by supply voltages so you don't have to keep adjusting them
-It can be played as low as can possibly be heard and still sounds clean so my guess is crossover distortion is low
-Cost of parts excluding heatsink and power supply is less than $10
-It can drive a 2 ohm load at lower voltages with no problem
I will work on getting pics online, schematics will be up shortly after
OK, I've made a page for the new amp, you can find the schematics here:
http://astro.temple.edu/~xioti/tipamp/
Sorry if it looks a bit weird, I did it in MS Paint
http://astro.temple.edu/~xioti/tipamp/
Sorry if it looks a bit weird, I did it in MS Paint
OK, both schematics and pictures are online now, tell me what you guys think or if any of you are willing to build it. 🙂
Solid snake has designed a different type of circuit. The experts here should give their views/suggestions/modifications so that we can proceed further to build the circuit. I must congratulate solid snake for his effort.
Mahendra Palesha
Mahendra Palesha
Thankyou, Thankyou much. I must apologize again for the schematic, it's a bit confusing. Suggestions and mods are welcome, especially from someone who has built and listened to it.
The goal here is discrete component, simple, clean, cheap and powerful.
The goal here is discrete component, simple, clean, cheap and powerful.
Dear solid snake,
why not put the schematics on the board? So that everybody will able to see it & give their views. If any problem then tell me so that i will do it.
Mahendra Palesha
why not put the schematics on the board? So that everybody will able to see it & give their views. If any problem then tell me so that i will do it.
Mahendra Palesha
PCB wanted for this
Hello !!
Is there anyone that made a layout for this ??
If so, where could I found it ?
Hello !!
Is there anyone that made a layout for this ??
If so, where could I found it ?
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