# Switching on & off of a modern electric stovetop

**URL:** <https://boards.straightdope.com/t/switching-on-off-of-a-modern-electric-stovetop/931412>\
**Category:** Factual Questions\
**Created:** [January 25, 2021, 1:31am UTC](https://boards.straightdope.com/t/switching-on-off-of-a-modern-electric-stovetop/931412 "2021-01-25T01:31:42Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![Melbourne](https://avatars.discourse-cdn.com/v4/letter/m/b5e925/32.png) [@Melbourne](https://boards.straightdope.com/u/Melbourne)\
**Post date:** [January 27, 2021, 5:01am UTC](https://boards.straightdope.com/t/switching-on-off-of-a-modern-electric-stovetop/931412/21 "2021-01-27T05:01:56Z")

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> [@Deeg](#):
>
> but why not use some sort of PWM control for the heat? It can’t be that much more expensive to implement, can it?

Cheaper normally, but not as physically robust.  
I’ve specified both high-current thermostats and high-current FETs, and the bimetal thermostats don’t demonstrate avalanche breakdown at blocking voltages.

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