Help?

[elrocco]

i need help understanding this schematic
http://europa.spaceports.com/~fishbake/amp/a100.jpg

im kinda new to electronics, i usually build simple stuff but this kinda is over my head can anyone help me out?
I think i can do this if I had a list of part's... thats the main problem i had.

 

[raromachine]

Help is a pretty vague title for a post

The parts are actually written on the image - TIP41, 142 and 147 are transistors as are the 2x 2a258. You'll probably want some BIT heatsinks for those transistors.

You've got 2x 1n4007 diodes.

A hand full of resistors of differing wattage ratings and a few caps.

And a +45v and -45v feed (which would be rectified from a transformer with 32VAC secondaries).

 

[AndrewT]

Hi,
I would say forget it.

If you want an intro to power amps then download some of BrianGT (or similar) chipamp schematics. Then build from there.

 

[CarlosT]

I like that..."this was handed down from a friendof a friend"

I gotta go with AndrewT on this one...any good chipamp kit will prolly be much more rewarding and you'll learn a lot more.

 

[elrocco]

Thanks for the help, but I really didn't make much sense. I meant what are equivalents to the TIP 142, 157, and 41 as I cannot find these components at any radio shack or hobbies store.

 

[raromachine]

Digikey seems to list them

But as the other posters have said - there are probably more modern and just as simple amps available.

 

[elrocco]

Ok, what would be a good place to find a schematic for one of them?

 

[AndrewT]

Hi,
I just did a search in chipamps for schematic and it came back with over 1300 threads.
If only 10% have a schematic posted then you have a choice of 130 schematics to choose from.

 

[elrocco]

ok thanks, all I'm looking for is a 12 volt chipamp schematic?