How can a thermistor be wired in for primary-side overload protection with a TNY284?
Posted by: Randoid
on
I’m trying to implement a thermistor for thermal overload protection of the transformer using a TNY 284 converter with no bias winding. Can a thermistor be wired in somewhere on the primary side using the EN/UV or BP/M pins? Presently there is a 3.3M pull-up resistor on the EN/UV pin and an optotransistor pull-down on the same pin.
Hi,
Let me clarify the question first, so the idea is to put a thermistor on the transformer to monitor the thermal overload. You question is to connect the thermistor to the BP/M or UV/EN pins? I am sorry that I did not really get the point. The BP pin can be a voltage source (5.9V) for your thermal protection circuits if you simply need a voltage source.
Please share a little bit more detail information that I can further assistant you.
Thanks