Wednesday, May 19, 2010

So what did you learn in school?

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I recently bought a 44780-based 16x2 LCD module from a shop I frequent. Before handing over the LCD they test it to show their client that i...
Sunday, January 24, 2010

Finding the resistor values in a voltage divider

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Am currently designing an instrumentation amplifier circuit that requires two different voltages for level shifting (Vcc/2 and Vcc/10). To o...
Sunday, January 3, 2010

Raindrop Christmas lights

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During a recent visit to the malls I saw what I would describe as raindrop type Christmas lights. Instead of bulbs there were these 5-inch t...
2 comments:

Charlie to the rescue

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Am working on a circuit that I want driven by an 8-pin PIC microcontroller. A 10-pin PIC would be great but such a part I can only dream of....
Monday, December 28, 2009

When not to use a clamp meter

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Was just wondering whether my hardly-used Sanwa DCM 60L clamp meter would be able to measure the current draw of an incandescent lamp. I t...
1 comment:
Saturday, December 26, 2009

Twinkle, twinkle little bulbs, how I wonder how you're powered

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Been meaning to find out the design of commercial Christmas lights control units. Obviously a microcontroller takes care of the various flas...
4 comments:
Saturday, December 19, 2009

ATX in AT's clothing

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I was going to use a very old AT power supply and convert it into a bench power supply, the reason being that it has a much larger case tha...
3 comments: