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Posts Tagged ‘npn’

USB curve tracer for NPN transistors

Thursday, April 21st, 2016

Dilshan Jayakody documented his USB port base NPN transistor curve tracer project: Curve tracer is an electronic test instrument to analyze the characteristics of transistors and other discrete semiconductors. In this post we construct USB base curve tracer to analyze properties of NPN transistors. This curve tracer is build around Microchip's...

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Posted in open source, USB | 10 Comments »

7400 competition entry: Homemade 7400

Friday, October 21st, 2011

Arup entered his Homemade 7400 into the Open 7400 Logic Competition. A video of it proving his concept is available below. At an earlier post I've said that I didn't have 7400ICs in my drawer. Surprisingly, the local store was saying 74HC00 out of stock. Hence I decided to make...

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Posted in 7400 contest | 2 Comments »

Recent Comments

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  • Edward Mallon: I've been oversampling those thermistors with the ADC and some pin-toggle noise for a while now, and that method is good. But lately I've been...
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