# Simple Analog Delay Circuit

#### Yoa01

Jun 18, 2012
214
Hi again!

So I need -- well, want -- to create a simple (relatively) analog delay circuit. I'd like to keep it as simple as possible. Controls ill be simple: just a slider pot to control the delay time. No other controls are necessary as it will have the same volume as the input signal and will only repeat once.

I've seen several delay circuits online (mainly as delay pedals), but they are either digital or don't have delay times that I would like (up to 1 second, more or less), and all of them have excess controls, thus making them rather complex.

I know digital would be easy, except that I can't program worth a crap. I can't buy a delay pedal or other unit because for this exact project that's simply not cost effective.

Any ideas?

#### (*steve*)

##### ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
Moderator
Jan 21, 2010
25,508
One option is to have a delay loop (like a tape recorder with separate record and playback heads.

You can either alter the spacing between them and/or change the tape speed to change the delay.

Surprisingly enough, this actually has a lot in common with the digital approach.

#### alfa88

Dec 1, 2010
349
You might want to consider a PT2399 (Princeton Technologies). It uses minimal external components, has 2 controls and by tweaking the pot values you might get up to 1 second delay. They make other models but I am familiar with this one.

#### CocaCola

Apr 7, 2012
3,635
I can't buy a delay pedal or other unit because for this exact project that's simply not cost effective.

Any ideas?

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