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Hello PCTech,
I don't work as a cinema service technician anymore, but I checked the "blueprint" and from my memory and common sense working together the output is as follows:
1: The circuit is made for allowing an adjustable voltage, not current. Otoh I guess it is the voltage you are interested in?
2: The meters are reading the current voltage and current respectively. They can be analog or digital, with knobe or with push controls or nothing at all, just read what they say. Basically they are optional but you want to be able to check what you are doing, at least until you have made a calibrated scale to accompaigne The Knob:
3: which is one only and not in the list of stuff you have bought. You see the arrow at R2? That indicates an adjustable resistor, in this case between 0 Ohm and 1000 Ohms. The output voltage depends upon what value you adjust this resistor to. I think you need to buy an extra component here.
4: Finally: A LM317T... what do you mean "big stuff", I think max current may be something like 1 or 2 Ampere here.
All those little electronic devices are small. I guess you have figured out you'll need to attach them to something? Like a little test board or something. Also, when draining some current from this circuit and having the Lm317t keeping the voltage down you'll have some energy in the regulator needing to leave it. Do you have some way to cool it? For example: You get 12 volts from the power supply, adjust R2 to let the circuit give 8 volts to an electric device that needs 1 Ampere... Now you reduce 12 volts to 8, that is 4 volts that needs to go, at 1 Ampere that is 4 Watt (P=UxI) and yo'll find that your little voltage regulator gets hot.
Good luck!
and watch out for the mains!
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unicorn
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to adjust the current output!
Linear Mode
