logic probe - Electronics Area https://electronicsarea.com Electrical and Electronics Tutorials and Circuits Wed, 06 May 2026 18:18:12 +0000 en-US hourly 1 https://wordpress.org/?v=4.9.26 Logic Probe using two transistors https://electronicsarea.com/logic-probe-using-two-transistors/ https://electronicsarea.com/logic-probe-using-two-transistors/#respond Mon, 06 Apr 2026 17:55:14 +0000 http://electronicsarea.com/?p=3470 This Logic Probe is a simple circuit implemented using two NPN bipolar transistors (T1, T2) in a Darlington configuration

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The post Logic Probe using two transistors appeared first on Electronics Area.

]]> https://electronicsarea.com/logic-probe-using-two-transistors/feed/ 0 Logic Probe with 7 Segment Display https://electronicsarea.com/logic-probe-7-segment-display/ https://electronicsarea.com/logic-probe-7-segment-display/#respond Wed, 02 Sep 2020 21:54:52 +0000 http://electronicsarea.com/?p=3476 This logic probe with 7 segment display is designed with TTL technology and does not use LEDs to display the high and low logic levels found in many of the logical probes on the market. The circuit shows the capital letter "H" when there is a logical "1" or the letter "L" when there is a logical "0".

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