UNDERSTANDING CONTROL TRANSFORMERS
In this HVAC training video program, Jim discusses various types of transformers, from standard step-down to multi-tap devices, and shows how to use a meter to test and troubleshoot them. Graphics and drawings are featured throughout the presentation to explain wiring configurations and show how a transformer does what it does in an HVAC/R control circuit.
Part # DVD 1995-01....DVD....$29.95
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