Fellow researchers,

I am trying to carry out an experiment on thermoplasticity in heat treatment of Steel cylinders. I want to set up my own heat treatment apparatus. I came across a readily affordable DIY equipment on the internet and I am pretty convinced it will suffice my needs. It is the popular ZVS (Zero Volt Switching) driver. I bought one for me, which is described here https://www.banggood.com/1000W-20A-ZVS-Induction-Heating-Machine-Cooling-Fan-PCB-Copper-Tube-12-36V-p-1089662.html?rmmds=myorder&cur_warehouse=CN . In my experiment I have to control the heat supply according to temperature. When the temperature reaches a threshold then the device should turn off. When the temperature goes below this threshold then it should switch back on. At first I thought of doing this with an SSR (Solid State Relay) where I would control the on/off function to the ZVS driver from Arduino. In regards to using SSR I have the following two questions:

1. I found in a YouTube video that the workpiece should not be inserted in the coil before turning on the driver. I don’t exactly have the link to the video but he said the reason was to avoid cross conduction in MOSFETs. This is not a problem for the initial insertion. However, as I plan on using the relay with the workpiece still inside the coil I may not be able to take out the workpiece (already hot) in and out.

2. What could be an alternative technique to control the power to the ZVS driver?