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Posts posted by dsandor
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I thank Audioguru for his notes. I very sorry but I missed circuit. I forget to draw a wire between 100 pot. - diode connect and GND of 7905. I'll modify my project for electronics-lab, too.
I agree with Audioguru. In his opinion sec. voltage of transformer (9V) too low for four batteries. He's right, however I still charge simultaneously only 2 batteries. So it was enough. I didn't think and didn't calculate this 9V is little. I think more voltage (15V) won't be bed besause cooling is soluble and before charging I descharge batteries until about 1V, so shouldn't be overcharging during given charging time.
Please write if somebody dosn't agree with me!
Batteries Charger & PSU - for Cameras
in Projects Q/A
Posted
Hi Audioguru, Ante !
Thanks for your notes. My project was updated before I have read your advice, so I couldn't mention nessesary of regulator heatsink and the contest have already finished. :(
I think it is not frequent occurrance using of digitalis camera with PSU and battery charging simultaneously, but it can occur.
Therfore I applied pot and ammeter because I charge not only NiMH batteries but older NiCd bat., too with lower charging current.