Minuscule circuit of the electric AC heater controller presented here is built around the renowned 3-Pin Integrated Temperature Sensor LM35 (IC1) from NSC. Besides, a popular BiMos Op-amp CA3140 (IC2) ...
The Family Handyman on MSN
Why Does Your Car Heater Only Work on One Speed?
Restoring multiple speeds to your auto heater/air conditioner blower by replacing a resistor module is a simple repair.
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