"the trim pin is tied toThanks, the article mentions using a diode connected bipolar transistor instead of a real diode, but the schematic explicitly shows model 1N4148 diode. What I'm confused about is where does the 1N4148 diode physically connect to R2?
It connects directly to the pot's wiper. (R2 is a potentiometer, by the way. And it's used to fine-tune the output voltage)Thanks, the article mentions using a diode connected bipolar transistor instead of a real diode, but the schematic explicitly shows model 1N4148 diode. What I'm confused about is where does the 1N4148 diode physically connect to R2?
Man, it must be warmer in Florida than in Mexico right now... you're typing faster than me!"the trim pin is tied to
the wiper of a potentiometer connected between the
output and ground"
I cheated. I copied that off the PDF.Man, it must be warmer in Florida than in Mexico right now... you're typing faster than me!
You just broke my heart... I thought we were friends!I cheated. I copied that off the PDF.
Well... what are you waiting for? Hit the "Like" button, dude!Just a follow up; I built the circuit from "Figure 10" above and it works awesome! I used a 25-turn 50k pot and it's easy to dial right in on exactly 5.000V, according to my fluke anyway so at least it's in the ballpark. Even with a small 1k ohm load the voltage didn't move at all, not even 1/1000V. I'll do some more load and temperature testing tomorrow, but I'm really happy at the moment. Thanks everyone for the help, this was a cool learning experience!
PS-> The resister + diode for temperature compensation are on the other side of the board.
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ooohhh... maaaaannn... please stop! MAKE IT STOP! I'm drowning on likes here!!!!I'll hit the Like button for you, Martinez.
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