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Subject: Need help designing AC circuit to produce 150 watts across resitive heaters

Date: 03/26/01 at 2:36 PM
Posted by: Jim
E-mail: jjsemler@eos.ncsu.edu
Message Posted:

I am in need of help to design a circuit to give constant power across
4 resistive heaters (R1-R4) from one 120V - 20A Breaker. All or some of the
heaters can be on at one time, and I need 150 Watts of power across each
resistive heater and not to exceed 4 amps in each such that the breaker blows
all the time. A psuedo schematic is given below.

102V/20Amp breaker --------|---/ -----R1------to rest of device
|---/ -----R2------to rest of device
|---/ -----R3------to rest of device
|---/ -----R4------to rest of device

R1-R4 are all ~1.5 Ohms in resistance.

Any and all help is appreciated.


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