Archive for the ‘C3 Capacitor Tester’ Category

Heathkit C3 Condenser Checker – Restoration

Ok, I’ve received my order from justradios.com.  Now it’s time to replace almost all of the capacitors and a good number of the resistors in the C3 Condenser Checker.  We’ll follow that up with a basic checkout, and finally finish up by testing the caps and resistors that we pull out. Here is what we […]

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Heathkit C3 Condenser Checker – How it Works Part 3

In Part 1 of this series of posts, I introduced the Heathkit C3 Condenser Tester Wheatstone Bridge operation. In Part 2, we traced out the schematic of the Resistance and Capacitance measurements. Here in Part 3, we will delve into the Leakage Test function of the tester. The Leakage test operates by placing a selectable […]

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Heathkit C3 Condenser Checker – How it Works Part 2

In my previous post, I described how the basic Wheatstone Bridge works, and how that circuit was utilized to find resistance and capacitance values in the Heathkit C3 Condenser Checker. In this post, we will look at the schematic diagram in two different forms to show some details of the circuit. The drawings in this […]

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Heathkit C3 Condenser Checker – How it works

The circuit description in the C3 manual does not go into many details about how the circuit works.  Although the circuit diagram is not drawn in the familiar layout for one, it may be traced out to arrive at a reasonable resemblance to a wheatstone bridge circuit. (credit diagram below to https://goforaplusplus.wordpress.com/2011/09/08/wheatstone-bridge/)

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Heathkit C3 Capacitance Checker Evaluation

In my previous post, I mentioned that the previous owner of the C3 Capacitance Checker had indicated that it had been rebuilt, and that it works.  I decided to take a look inside to see what had been done before powering it up on the bench for evaluation.

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