TODO
Spot the Mistakes 10![Colin Mitchell]()
PR4401 1-watt LED Driver by TA Babu (India) This is one of the worst circuits I have seen. It uses a…
January 19, 2010
spot-the-mistakes 34
TODO
Spot the Mistakes 9![Colin Mitchell]()
Here's a circuit with a slight fault: The 100p between the microphone and base of the first…
February 01, 2009
TODO
Spot the Mistakes 8![Colin Mitchell]()
The next mistake is simply "over-complexity" from a kit by Future Kit, a Thailand firm. Look at the…
April 30, 2008
TODO
Spot the Mistakes 7![Colin Mitchell]()
2-Digit Display The next circuit has a number of problems. It is possibly the worst "2-Digit Display…
November 02, 2007
TODO
Spot the Mistakes 6![Colin Mitchell]()
Sound Meter The next circuit has two problems. Connecting an electret mic directly to the input of a…
August 09, 2007
TODO
Spot the Mistakes 5![Colin Mitchell]()
The next discussion is not a mistake but an item that needs discussing. It is a 555 demonstration…
March 22, 2006
TODO
Spot the Mistakes 4![Colin Mitchell]()
Biasing Resistors The next discussion is not a mistake but an item that needs careful attention. A…
August 16, 2004
TODO
Spot the Mistakes 3![Colin Mitchell]()
Power Supply Failure Alarm Here's a circuit from the web. It has obviously never been tried: Can you…
June 20, 2004
TODO
Spot the Mistakes 2![Colin Mitchell]()
THE KEY-HOLE LIGHT The next circuit (shown in Fig: 10) has two mistakes. One of them was so serious…
June 20, 2004
TODO
Spot the Mistakes 1![Colin Mitchell]()
This group of circuits comes from various books and magazines that caught the author's eye due to…
June 20, 2004
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