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I do not need to go below the reference voltage, I actually won't be needing a ton of voltage so 2-5V should be fine, I would like to have accurate current measurements.
I had to modify a the circuit based on the equipment that I have.
I replaced Q3 with a PNP Mosfet which is always open.
The base of Q3 has a N type transistor with a "reference voltage"; made up of a diode and 330uF capacitor.
Q3 output has a voltage divider consisting of 2 1K resistors; The...
I am doing small electrolysis experiments and need to test the amount of current needed to conduct through a solution.
I don't need a lot of volts but having accurate current measurements would be beneficial. I have another power supply that is switched mode power supply but it doesn't show...
This is a bit confusing to me and here's why. These all seem to be NPN transistors.
The unregulated voltages goes into the circuit and runs into the collector for every transistor; Q3, Q2, and Q1.
This might seem basic but I just don't see a way for any transistor's base to get enough current...
I am more trying to understand the workings of the circuit. I have seen the internal schematic of the 7805 but that's a bit too complicated for me to follow at this moment.
Thank you, I am re-drawing this out and working my way through to understand the circuit. Once it's sunk in I'll see if I...
I would like some help figuring out this linear regulator.
I'd like to break it down into the three main parts as I see it.
I understand that there's a pass transistor Q3.
D1 and C1 form to create a reference voltage.
I understand that Q4 forms some type of current limiter but I am unsure...
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