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Dual-output PWM controller

TL494 Basic Circuit

Build a basic TL494 circuit with labeled pins, component values and connection guidance.

Package view

TL494 in a circuit

A 12 V controller with low-current resistive loads.

TL494CN with12V supply,1nFCT,100kRT,REFpottoDTC,definederrorinputsandtwo4.7k resistorloadedoutputs.
Matching net labels connect; all grounds share the same return. Waveforms are illustrative.

Connect it, step by step

Follow the component values and pin connections

Set a nominal 10 kHz clock

Connect 1 nF to CT and 100 kΩ to RT, both returning to ground.

Adjust dead time

Turn the REF-powered potentiometer from HIGH toward LOW and observe the growing LOW pulses at C1/C2.

Compare modes

Power down before changing pin 13 from GND to REF. Push-pull mode alternates the channels and halves each output frequency.

Component view