Originally Posted by
ABN Hoosier
Roelof:
That would be a large savings if that regulator would work.
There are a few versions of that regulator. It is confusing but I would want one with the 12VDC and largest amp rating which I think is 7A. Do you have a link for that ??
I think the LT1083 is the 12VDC 3A-7A voltage regulator....is it not?? I aint an engineer, but dang!!
"LT1083 - 7.5A, 5A, 3A Low Dropout Positive Adjustable Regulators • Linear Technology"
I think the LT1083CP-12 is it, yeah??
Regulator Topology Positive Fixed
Voltage - Output 12V
Voltage - Input Up to 25V
Voltage - Dropout (Typical) 1.3V @ 7.5A
Number of Regulators 1
Current - Output 7.5A
Current - Limit (Min) 8A
Operating Temperature 0°C ~ 150°C
Yes, that one can be the one, indeed there is a 1083, 1084 and a 1085, all 3 stands for a maximum current and indeed there are fixed and adjustable voltages. I do not think an adjustable is needed but in case of lower voltages it can be wise to go to 11.5v for the needed voltage drop.
You should messure the current, if it is about 4A you can also use a small resistor like 0.47ohm - 5 watt to lower down the voltage by 2v or simple some high current diodes (0.6v per diode)