Temperature Controlled NICD Charger


Posted on Nov 18, 2012

This circuit is for a temperature controlled constant current battery charger. It works with NICD, NIMH, and other rechargeable cells. The circuit works on the principle that most rechargeable batteries show an increase in temperature when the cells becomes fully charged. Overcharging is one of the main causes of short cell life, hot cells pop their internal seals and vent out electrolyte. As cells dry out, they lose capacity.


Temperature Controlled NICD Charger
Click here to download the full size of the above Circuit.

The transformer, bridge rectifier, and 1000uF capacitor provide around 22 Volts of DC power to run the rest of the circuit. The 7812 regulator drops this to 12V to run the 311 comparator and 4011 nand gates. The start switch is pressed to start the cha




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

4.5Mhz notch filter
Electronic-time-delay
Head light timer circuit
tape content monitor
stereo pll fm transmitter based bh1417
the octal phono preamplifier
light dependent blinker using ldr and cd4093
Boss MT-2 Metal Zone distortion pedal schematic diagram
Sound Synchronized LED Video Tutorial
Speed of Light with Nanosecond Pulsed 650 nm Diode Laser
Fundamentals of Electrical Engineering and Class B audio amplifier



Top