HomeRoast Digest


Topic: Complete Control of WB Poppery II (2 msgs / 47 lines)
1) From: Glenn Vonk
I modified a Wear-Ever Popcorn Pumper, 1250 watt model
with a DC motor.  
I
used a 24 volt transformer to feed the motor, with a
standard cheap 600 
watt
rotary dimmer feeding the primary of the transformer. 
It works great,
except that the rotary pot provides too much
resistance, so that I can 
only
turn the dial about 1/4 turn before it turns the motor
down too much.
Dave,
On mine, if you look closely you can see 4 diodes
soldered to the motor to rectify the current to DC. 
So, in a sense you are correct.  However, you are
feeding AC to the motor in your arrangement as well. 
I assume, if you check it out, you will find the
diodes.
Best,
Glenn
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2) From: EskWIRED
<Snip>
Yep.  The original WEPP and the WBPI each had a big AC motor, but subsequent
models use DC motors with full bridge rectifiers soldered directly onto
them.
I have the secondaries of the transformer hooked up to the bridge, so the
motor gets DC.
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