relay
relay
(OP)
I have a preloaded counter that I use to shut off a relay . It works great until I run 110vac through the contacts of the relay.Then it makes the counter load up various numbers that it pulls out of the sky. I have tried to isolate the relay with an opto isolator and with diodes and transistors , but to no avail.Any ideas????





RE: relay
Try to make the relay load less noisy by either putting an RC combination across the load. 100 nanofarads and 47 or 100 ohms is usually a good choice for small loads. You may need up to 1 microfarad and a smaller resistor for larger loads.
A varistor (MOV) across the load usually also helps. Select the MOV operating voltage higher than the load voltage and do not forget that it is the peak voltage that counts (RMS times sqrt(2)).
RE: relay
RE: relay
Like this: ---resistor----capacitor---
RE: relay
1
1
1uf
1
1
resistor
1
1
110 neutral---neutral motor line
RE: relay
the rc combo in parallel with the motor
RE: relay
Hate to ask this question: Did you get yourself an electrolytic capacitor? They do not go well with AC.
RE: relay
RE: relay