T&L Publications

I'm working on a simple LED clock circuit, using a 32.768KHz crystal as a time base. The crystal is wired to a binary counter IC (4060 counter/divider), with a resistor in series with the crystal and two 22pF capacitors in parallel -- not sure how to explain correctly. From my understanding of the I...

Sundancer87, what you said about LEDs is not true. The LED doesn't just go out when the current drops below a certain level. Just think about it. If you connect an LED in series with a potentiometer, the light will vary as you turn the pot. Perhaps there is a thresehold, but if there is, then it's v...

Thanks for the help, guys!<p>Bodgy, you kind of lost me there... I have a lot to learn about electronics. I'll look into the ICL8038 you mentioned. I don't really understand the other stuff. And no, I didn't mean radio frequencies, just audible range. The link you provided looks really helpful.<p>De...

I'm sort of new to electronics, and I would like to know how to generate sine waves. Can I make a simple circuit using capacitors, transistors, etc. or are there inexpensive ICs that make sine waves?

You're from ontario too! I got some neodynum magnets from a place called "Lee Valley". It's a woodworking/gardening tools store. They have a catalogue, and I think you might be able to order from them. I saw some ring magnets in there... And yes they are VERY powerful. Keep them away from ...