Air flow across the sensor diode then results in a voltage difference between the two ends of the meter causing it to deflect. The marked (*) 1N4148 diode should be exposed to the same air as the ...

This digital thermometer circuit diagram uses a common 1N4148 diode as the temperature sensor. The temperature coefficient of the diode, -2 mV/°C is exploited for this application to create an ...

1-Wire uses active-low logic. The bus is pulled high by default, and a device that wants to transmit a bit pulls the line low. Putting a diode on each UART TX pin prevents signal conflicts where ...

The diodes are 1N4148-type devices. Yet because they must be matched, they're often part of a transistor array (short the collector-base junction and use the emitter-base junction as the diode).

Posted in Misc Hacks, Tool Hacks Tagged 1n4148, casserole dish, ... Any diode will work but the small glass encapsulated ones have a much lower thermal mass and better response time.