[sdiy] slightly OT - chorus pedal schematic?

[Dave Kendall]

Thanks for all the replies.

Will check out DIYstompboxes.com.  Hopefully someone will have the 
schemos.........

Tom - I'd be very grateful for those - The box has been modded by a 
previous owner to give a mixed signal (or so the dymo label says!), and 
a couple of wires are missing from the board.
They look like they go to the pots, but which way round?

Thanks again for everyone's input.

cheers,
Dave



On Feb 8, 2010, at 15:19, Tom Wiltshire wrote:

> If you don't find a schematic for the actual device, I could dig out a 
> heap of chorus schematics that use the same delay lines. They'd give 
> you some clues - these things often don't vary a lot.
>
> T.
>
> On 8 Feb 2010, at 14:04, Dave Kendall wrote:
>
>> Good point Damian.
>>
>> It uses an MN3209, an MN3102, an LM339 and a 4558. Only has rate and 
>> deptyh controls, so should be simple.
>>
>> cheers,
>> Dave
>>
>>
>> On Feb 8, 2010, at 12:33, cheater cheater wrote:
>>
>>> You might have luck if you identify the BBD chips and look in the 
>>> app notes.
>>>
>>> HTH
>>> D.
>>>
>>> On Mon, Feb 8, 2010 at 06:44, Dave Kendall 
>>> <davekendall at ntlworld.com> wrote:
>>>> Hi.
>>>>
>>>> Hope this isn't too OT. I have an old loco box CH-01 chorus pedal 
>>>> that I'm
>>>> trying to get working and modify for synth use, and a schematic 
>>>> would be
>>>> very helpful. A google search was a fail.
>>>>
>>>> Anyone know of a source, or can recommend a good stompbox forum?
>>>>
>>>> Cheers,
>>>> Dave
>>>>
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>>>
>>
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>