Thx ronv ..... hopefully i thought from front side which is mark details, the left one would be emitter middle one base and last one as collector.. is n't it?Do you know which pins on the BD140 are the base and emitter?
i fix it on that way too..but some guy said 123 as ebc are you sure 123 is ecb..thxIf it looks like this one it is Emitter, Collector, base.
thx...sqtwookie...yep have some heatsink and also fan...but problem is it gives 25v which is same amount as input rather than expected 14.5v..thats the issue..Do you have a REALLY LARGE heat sink on the LM350? It's going to have to dissipate over 30 Watts of power while charging a battery; which is going to take a LOT of surface area to dissipate. Although it does has some built-in protection against overheating, the thermal stress is really hard on them.
Thx..alec..ill check ...for your important advice..on pcb which is having tiny lines..If there is a poor connection to R4 or P1 you will get excessive voltage at the regulator output and P1 won't have any effect; symptoms that you're seeing. Check the circuit in that area.
Is the circuit built on a breadboard or on a pcb?
by Jake Hertz
by Jake Hertz
by Duane Benson