Sample and Hold circuits

[Jezz Brookes]

Anyone have a real simple sample and hold circuit? I need some for a 
MIDI-CV box and as I want multiple outs, the simpler, the better.

Thanks.
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     Jezz @ http://homepages.enterprise.net/jezz/    
Roland D-110  Yamaha YS-100  Casio CZ-101  Boss SE-50  
   C-Labs AWE-32  Tascam 4 Track  Tascam 8ch Mixer   
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