Re: Tek 576 Curve Tracer solid state replacement for relays ?

Brad Thompson

garp66 wrote on 1/6/2020 5:01 PM:

Wondering if anyone has replaced any of the mechanical relays in a Tek 576 ( Or any to the other curve tracers) , with solid state relays ?

There might be some issue with HV areas, but modern HV IR HexFets might be able to handle the HV.


A solid-state relay (SSR) uses a semiconductor device as the electrical contact.
The voltage drop across the device varies with the contact current and
hence could introduce an error. A clunky old mechanical contact is
better in this respect.

If you were starting a curve-tracer design, you could investigateĀ  SSR properties
and possibly compensate for errors, but retrofitting SSRs in an existing
curve tracer would be messy,


BradĀ  AA1IP

Join to automatically receive all group messages.