The manuf says it won't work because its temp rating is designed on the 240v
the amp draw and heat characteristics will be off if using 120v. It will
still work, but if there are any temp settings on the control, they will be
off accordingly. remember, 1/2 of the voltage= double the amp draw....

Baron wrote:
From the point of view of cost, I like the idea of a single
phase-controlled TRIAC driving both heaters in parallel since the
[quoted text clipped - 27 lines]
feedback used to control the brightness of a lamp. Or, for another
example, a VARIAC.

Hi John,

The simmerstat is only open loop in the sense you describe. There is no
sensing of the actual hotplate temperature. The current through the
hotplate passes through a secondary heater wound around a bimetallic
strip. This simply makes/breaks the circuit. A cam controls the
distance the bimetallic moves.


--
Message posted via http://www.electronicskb.com