The draft circuitry for our new oven looks as below:
Draft for the rewired circuit
The upper heating elements are connected parallel with the lower heating elements. These elements are then connected to the AC power which sends out an sinusoid power signal. The solid state relay will act as a switch which allows us to control the current going to the heating elements by sending out the digital signal 0 and 1. If it’s 1, the switch will be closed and the current will go to the heating elements. Also, before going to the heating elements, it has to pass the diode which will convert the AC signal into DC signal. Specifically, instead of having both the positive and negative values, the diode allows only the positive values to go through. Finally, the solid state relay is connected to the Arduino/TC4 micro-controller which can then be programmed the way we want so that it’ll follow the temperature profile that we have.
The first version of the actual circuit looks as below:
Testing version
