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a high value resistive divider brings capacitor voltage down to a useable op-amp voltage. The op-amp's output goes high when the capacitor's down-scaled voltage exceeds the voltage reference.

What I have found so far has been by historical approach. Possibly as gels improved higher voltages have yielded higher definitions in separation bands and higher voltages have been employed using the isoelectric focusing technique. Using a single gel using comb 100V and 75mA ((This is a rough...

The V-G amplifier loop is essentially two op-amps; i-f amp, DC amp and a detector. (some i-f use more than one op-amp) A control voltage is center of this circuit it varies the i-f amplifier in an even linear fashion. AGC detection uses two types; audio derived and i-f signal derived. This...

Re: "You could if you had electrical experience." answer: yes I notice nbuckska that you reply to a great number of forums. Thankyou in this particular post I am looking for someone with experience in Gel Electrophresis, I am aware of what the web has and what manufacturers can offer...

Inside some computer monitors have degauss button one possibiliity for finding a junk degausser. Or make one: http://www.antennex.com/hws/ws0300/magdemag.htm

Hello, I wondered if I could make a power supply for a very basic Gel Electrophoresis experiment ? What voltage and current charecteristics does it have typically and how precise would it have to be ? Thankyou