Re: Fixing a laboratory waterbath
The reasons why I'm doubting relay:
- Voltage of the relays are typically printed on the relay
- Switch characteristics are typically printed on the relay
- It appears to be controlling the triac if that really is a triac there - versus a load. Again I don't see the connections so have to make assumptions with the incomplete data here.
- tracing the input path, what a mess, the device is being driven with very little current, not enough for a relay due to a resistor in series with the current path.
My current guess: "optoisolator" in quotes as a guess someone potted a LED and some optical sensors in that plastic.
But this is still just a guess. But if that device feels like it has metal in it then fine it can be a relay and will need to retrace the circuit more carefully. Really would like a picture with all the boards assembled together to make sure things are the way I thought they are connected.
The reasons why I'm doubting relay:
- Voltage of the relays are typically printed on the relay
- Switch characteristics are typically printed on the relay
- It appears to be controlling the triac if that really is a triac there - versus a load. Again I don't see the connections so have to make assumptions with the incomplete data here.
- tracing the input path, what a mess, the device is being driven with very little current, not enough for a relay due to a resistor in series with the current path.
My current guess: "optoisolator" in quotes as a guess someone potted a LED and some optical sensors in that plastic.
But this is still just a guess. But if that device feels like it has metal in it then fine it can be a relay and will need to retrace the circuit more carefully. Really would like a picture with all the boards assembled together to make sure things are the way I thought they are connected.
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