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 Forum index » DIY Hardware and Software » Thomas Henry designs
TH LFO Controller LM13700 chip running hot
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rumblin_cynth_rampo



Joined: Nov 15, 2012
Posts: 31
Location: Cardiff, Caerdydd, UK

PostPosted: Mon Jun 30, 2014 3:03 am    Post subject: TH LFO Controller LM13700 chip running hot Reply with quote  Mark this post and the followings unread

Have just finished the first of a pair of TH LFO controllers on Fonik's PCBs. Apart from a low level on the sine wave op ,which required a trimmer change to sort out, the module ran first time (always a good feeling).

Calibrating the module I noticed that the IC3 (LM13700) chip is getting quite toasty. Is this normal for this module? I change the IC3 for another LM13700 and also tried a NJM13700 that I had. These to got rather toasty.

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