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MY EXPERIENCE IN AUTONOMOUS ROBOTICS | |
OPAMP LM324 Start with Circuits of lm324 Why comparator prefered over transistors IC741 Why LM324 over IC741
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Why Comparator is preferred over Power Transistor? In robotics we require only two levels, active HIGH or active LOW that exist in comparator, but in power transistor there is regions between cut off and saturation, so that output varies with the input voltage at the base. Second thing is that power transistor is a current controlled device. But we always require voltage comparison, so we prefer comparator. But comparator outputs cannot be connected directly to the relay or motors. I will explain in H-bridge section.
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