Forum Discussion
WilleyB
Apr 25, 2007Explorer
Hi trouble1263, and thank you for your kind thought.
For those members who would like to do the transformer fix :W I'll try to clean up my drawing and terminology. As LScamper has suggested an autotransformer is an expensive item indeed. What is proposed here is a method to compensate for, by lowering the wattage of an underrated 120 volt element. Namely those heating elements with a resistance below 40 ohms.
What is proposed is a Radio Shack #: 273-1511 or Circuit City #: 2731511 Transformer
Transformer: primary is 120 VAC, HD type. Volts: 12.6V CT. 3.0A. in either case the price is about $10. The 120 volt PRIMARY winding has two black wires that are smaller in diameter than the three wires of the 12.6 volt SECONDARY winding. The CT in the "12,6 CT" stands for "Center Tap" meaning that the 12.6 volt winding is equally divided. There are two yellow wires which are the 12.6 volt leads with a black lead from the Center Tap and from the black lead to either yellow lead we would measure 6.3 volts while in operation.
Click-->
The connections:
Connect one wire of the fridge 120v element to a transformer Primary wire as shown (like Red wire shown) and to one side of the 120 volt line (AC black wire). The other element wire will be connect to the other transformer Primary wire. Then connect the white 120v AC supply (from the control board where the element is connected to now) wire to the black Center Tap wire of the Secondary winding. Then connect one of the 12.6 volt secondary wires (yellow A or B) to the point marked "C" as shown on the diagram. These connections make the transformer operate like a step down transformer in that now there are many more windings across the 120 volts, by using only the primary leads as an output the voltage will be reduced to about 113.7 volts. (120 - 6.3= 113.7) If you have less you can connect point "C" to the opposite side of the secondary.
Unused leads should be taped (insulated as voltage will be present) In operation the Transformer will be warm to the touch, but it should not real hot. I anyone wishes to do this instead of replacing the heating element and wishes to ask questions " go for it " if can help I'll be glad to.
Willis
My thanks to LScamper for pointing out my omission that the 120V for the circuit comes from the circuit board and not directly from the line voltage :o
For those members who would like to do the transformer fix :W I'll try to clean up my drawing and terminology. As LScamper has suggested an autotransformer is an expensive item indeed. What is proposed here is a method to compensate for, by lowering the wattage of an underrated 120 volt element. Namely those heating elements with a resistance below 40 ohms.
What is proposed is a Radio Shack #: 273-1511 or Circuit City #: 2731511 Transformer
Transformer: primary is 120 VAC, HD type. Volts: 12.6V CT. 3.0A. in either case the price is about $10. The 120 volt PRIMARY winding has two black wires that are smaller in diameter than the three wires of the 12.6 volt SECONDARY winding. The CT in the "12,6 CT" stands for "Center Tap" meaning that the 12.6 volt winding is equally divided. There are two yellow wires which are the 12.6 volt leads with a black lead from the Center Tap and from the black lead to either yellow lead we would measure 6.3 volts while in operation.
Click-->
The connections:
Connect one wire of the fridge 120v element to a transformer Primary wire as shown (like Red wire shown) and to one side of the 120 volt line (AC black wire). The other element wire will be connect to the other transformer Primary wire. Then connect the white 120v AC supply (from the control board where the element is connected to now) wire to the black Center Tap wire of the Secondary winding. Then connect one of the 12.6 volt secondary wires (yellow A or B) to the point marked "C" as shown on the diagram. These connections make the transformer operate like a step down transformer in that now there are many more windings across the 120 volts, by using only the primary leads as an output the voltage will be reduced to about 113.7 volts. (120 - 6.3= 113.7) If you have less you can connect point "C" to the opposite side of the secondary.
Unused leads should be taped (insulated as voltage will be present) In operation the Transformer will be warm to the touch, but it should not real hot. I anyone wishes to do this instead of replacing the heating element and wishes to ask questions " go for it " if can help I'll be glad to.
Willis
My thanks to LScamper for pointing out my omission that the 120V for the circuit comes from the circuit board and not directly from the line voltage :o
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