Temperature–Compensated Programmable Current Source Circuit Design with Zener Diode, BJT Transistors

Описание к видео Temperature–Compensated Programmable Current Source Circuit Design with Zener Diode, BJT Transistors

How does a temperature-compensated adjustable current source work and how is it designed are the questions that are discussed in this electronic circuit design video. This programmable current source is designed using Zener Diode, Digital Potentiometer and matched BJT transistors. The formula for the output current of the circuit is computed as a function of circuit components. The potential choices of circuit components are also discussed including the 1N5228 Zener Diode from Vishay semiconductor with a negative temperature coefficient, the matched PNP Bipolar Junction Transistor pair BCM857 or PMP5201 from Nexperia,, and the AD8400 or AD5232 256-position Digital Potentiometer from Analog Devices.

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