A while back I posted a thread about bulding a simple shunt regulator for a smallish solar and/or wind dump controller.
I was told by our friend Flux
2N3055 is limited to about 60W per device, with practical heat sinking, but if you choose a suitable series resistor you can dump 240W as the dissipation in the transistor is 25% with half volts across the resistor.
Now for the question:
Is there an example formaula that I could plug values into to determine the proper resistor value to obtain "half volts" across the resistor?
Thanks much in advance for any help given