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Preliminary article... editing and pictures still
left to do!!!
In regards to the installation of the SCR in the
Sebring Automatic Charger found on the Comuta-Cars. Lets first start
with the two diodes mounted to the chassis just under the edge of the
transformer. They rarely go bad so dont mess with them. The SCR
(Silicon Controlled Rectifier) is the thing mounted to the side of the
enclosure. The problem with quick answers here is that there are 3
different types used; there is the Anode stud mount, the Cathode stud
mount and the insulated stud mount. They are all electrically wired the
same but physically differently. On the side of all the SCRs is a
picture of an arrowhead hitting a target. That symbol shows the
cathode, anode and gate. The cathode (-) being the target (line) and
the anode (+) being the arrowhead. The black wire from the transformer
goes to the anode along with the green wire from the PCB (Printed
Circuit board) usually the big terminal coming out the top. The yellow
wire from the PCB and a purple wire go to the ring at the stud end (the
purple one may go through a circuit breaker)*. The white wire from the
PCB goes to the little terminal on the top of the SCR.
On some embodiments the enclosure was used as the
plus line on others it is just the heat sink. You may have other wires
that go to the charge light or other indicators. I recommend reading
the Charger section of the Nu-kar service manual for the CitiCar and
Comuta-Car; Ive drawn pictures in it for you. Both the manual and this
article are copyrighted all rights reserved.
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