I have a controller that provides a 9V DC output that is connected to an SSR module which is in turn activating an SSR that is controlling a heater. The when my controller is not calling for output, I have 80V across the SSR module output, and 40V across the external SSR controlling the Heater. The SSR controlling the heater is activating, turning the heater on when there is no call for output.
I know I need to add a bleeder resister, but I do not understand what the bleeder resistor is doing. Putting a resistor in parallel will reduce the overall resistance of the load (the load in this case being the SSR directly controlling the heater, and the source will be the output of the SSR module controlling the external SSR). So when this happens, I will be drawing more current from the source, the SSR module?
It makes sense if I look at it like a voltage divider, the reduced resistance from the bleeder resister/SSR input would cause less voltage to be dropped across the SSR input, therefore preventing it to activate when there is no output.
I suppose I do not fully understand why the triacs output of the SSR is not dropping the full 120V, and is dividing in the first place with the external SSR input. Why am i seeing 80V at the SSR module output, and 40V at the external SSR input? What does adding the bleeder resister actually do to restrict the voltage available at the external SSR input?
I know I need to add a bleeder resister, but I do not understand what the bleeder resistor is doing. Putting a resistor in parallel will reduce the overall resistance of the load (the load in this case being the SSR directly controlling the heater, and the source will be the output of the SSR module controlling the external SSR). So when this happens, I will be drawing more current from the source, the SSR module?
It makes sense if I look at it like a voltage divider, the reduced resistance from the bleeder resister/SSR input would cause less voltage to be dropped across the SSR input, therefore preventing it to activate when there is no output.
I suppose I do not fully understand why the triacs output of the SSR is not dropping the full 120V, and is dividing in the first place with the external SSR input. Why am i seeing 80V at the SSR module output, and 40V at the external SSR input? What does adding the bleeder resister actually do to restrict the voltage available at the external SSR input?