Beginer Schematics Needed

Hi! I need to find a simple amplifier schematic for my son's guitar...Loud enough to be heard well but not loud enough to be able to P.O. the landlord.

Also I need a simple schematic for an echo unit(like a bucket brigade) using a 555 chip.

I have a bunch of spare parts to use on these projects but I'm a novice so I need very simple designs...

Thanks in advance...

Bill

snipped-for-privacy@juno.com

Looks like the first one is pretty easy.

You can't make an analogue delay from 555s ! I don't think you can even get those charge coupled delay chips any more anyway. It's cheaper to do it in CD quality DSP now.

Graham

For a very simple and cheap practice amp circuit, go here:

Echo is beyond beginner I think.

For a very simple and cheap practice amp circuit, go here:

Just play the amp in the bathroom.

....... Phil

On 27 Jan 2006 22:33:48 -0800 in sci.electronics.basics, snipped-for-privacy@jhu.edu wrote,

LM386 with input signal full blast on the input and a "rheostat" on the output to control volume? Is that whacky or is it just me?

Probably the design of a recent 'graduate' going by what I hear of the skills being taught currently.

Graham

Some of these guitar players want to take advantage of the way the chip distorts. The same web site has a variation called "Little Gem" that puts a common pot in front of the 386 instead of the rheostat after. The manufacturer's data sheet circuit is probably the place to start with the LM386.

Here's a LM386 amp for $4:

Here is the absolutely simplest 386 circuit:

Scroll down to the "smokey amp clone"