Some time ago I was trying to revive my nicad battery pack and stumbled over your schematics for battery rejuvenator, circuit seemed easy even to me (I'm not really good at that stuff), so it took a while till I got all the needed parts but I did finally and built one according to the simple circuit posted in here. Only thing was that in one schematic the resistor was 10 ohm and in another 680 ohm so I decided to get a 1k logarithmic pot instead and just try it all the way around. But what I decided to bother you about is that I can't get it to work. It's built exactly as the circuit only difference being the pot, 1N4148 diode instead of 1N914, poorly wound welding rod core coil, my soldering iron is dead so everything is just hooked up and it's connected to the old nicad battery pack for testing. So if you have any suggestions on what could be wrong, maybe you had some problems with it too and know what it might be, or pretty much anything you can suggest, I'd be really grateful. here is the pic of the (poor) setup.
![Image](http://i47.tinypic.com/1z2zr7r.jpg)