I would tell you, but then I’d want a cut of whatever market you manage to corner....😁
The only rectifier I ever built was a 4-diode full wave to charge my battery when the voltage regulator in my Fiat went out - and I would have had to buy a while new alternator to replace it - just used the biggest diodes I could find in our bench stock....
Heh, 2nd comment to that effect.
In this case the prospective market is just me.* This diode technique to provide “half power” is, as I mentioned above, used in maybe 20% of the quart” heaters on the market.
Basically, if you see all the elements dim on “low power”, vs. “high”, a series diode has probably been switched into the circuit. More commonly, the heat setting is determined solely by the number of elements running full blast. I have a different floor standing quartz heater with 3 elements, so the user can turn on one, two, or all 3. Each element is ~500 watts.
*That said, I just now ordered my 20 pcs. of 20 amp diodes. So, I can modify a couple other heaters too, maybe even that 3-element unit. I don’t “need” 6 heat settings, but, as a preventive measure to extend the lifetime of both the elements and (using the controls wisely) the thermostat, it might well be worth it.