| jeppix |
I know the subject is not new :bigeyes: but I've some questions to ask you because I try to read all messages about gainclone but I don't find the answer to my questions.
I'd like to build a gainclone for my electric guitar, so I think to use 1 rectifier PCB, 2 PCB with LM3875TF that amplifyy 2 speakers 100W 8ohm.
I've found (in my garage) a trasformer that have secondary voltage of 24-0-24 and 300VA, is it suitable for the project?
Another question...
I've found a little circuit to control the tone (bass, middle, treble) at http://www.runoffgroove.com/tonemender.html this circuit use DC power (9V).
How could I use the same trasformer of gainclone to power this circuit?
Sorry for the "stupid" questions but 'till now I only make little circuits with 9V battery, for me it's the first time that I use a trasformer :confused:
Thank you, and sorry for my awful english :angel:
Andrew |
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| moamps |
| quote: | Originally posted by jeppix
.....I'd like to build a gainclone for my electric guitar, so I think to use 1 rectifier PCB, 2 PCB with LM3875TF that amplifyy 2 speakers 100W 8ohm..I've found (in my garage) a trasformer that have secondary voltage of 24-0-24 and 300VA, is it suitable for the project? |
Hi,
The LM3886 is a better choice for this project. It's possible to use the LM3875 instead but you should use a very good (big) heatsink.
It's possible to use higher voltage to power this circuit (up to 30V). I suggest that you try a simple regulator based on the 7824 chip (24V), which should be connected to the + output of your amp's nonregulated power supply. The 7824 datasheet can be found easily on the net.
Regards,
Milan |
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