In the learning projects I'm doing, some of the schematics that use pots will only connect the input and output pins. But some schematics will connect the 3rd pin to ground.
In the learning schematic I've attached, the pot is connected to ground (#39). The circuit is intended to show how a zener diode works. While connected to ground the circuit works as expected. I disconnected #39 and found that the circuit allowed more power to the circuit.
I'd like to understand what is happening here. What is the purpose in connecting the pot to ground? Why only use in some projects?
In the learning schematic I've attached, the pot is connected to ground (#39). The circuit is intended to show how a zener diode works. While connected to ground the circuit works as expected. I disconnected #39 and found that the circuit allowed more power to the circuit.
I'd like to understand what is happening here. What is the purpose in connecting the pot to ground? Why only use in some projects?
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