N nkn Member Feb 21, 2013 #1 help i look for circuits from Electronics-USA digital capacitans meter use icm7226 , 74c221 and ca3140. The princip is auto zero, 0.1pf-10000uf and use icm7226 to frequence ratio counter.
help i look for circuits from Electronics-USA digital capacitans meter use icm7226 , 74c221 and ca3140. The princip is auto zero, 0.1pf-10000uf and use icm7226 to frequence ratio counter.
MikeMl Well-Known Member Most Helpful Member Feb 22, 2013 #2 There are various PIC-lcd circuits on the web that work very well. I own a commercial version. Here is a **broken link removed**
There are various PIC-lcd circuits on the web that work very well. I own a commercial version. Here is a **broken link removed**