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An electronic component that sources current - if it sinks current it is called a current sink but both devices (sinks and sources) can be called sources. An IDEAL current source will supply current, maintain high voltage compliance (i.e. adapt its output voltage to match the network it is supplying current to) and have an infinite output impedance. In non-ideal implementations current sources have limited operating ranges and finite output impedances.

2 votes
4 answers
342 views

Simulating the Howland Current Pump in Real-World Applications

I am working on developing a device that has to deliver a bipolar sinusoidal current with zero offset through a variable load (from 1k to 10k Ohm), with a maximum peak current of 4mA. This means, that …
neusp's user avatar
  • 97
4 votes
4 answers
476 views

Voltage controlled current source design

I'm working on a project where I need to design a bipolar current source controlled by a sinusoidal voltage between -1.25 V and 1.25 V. It has to deliver a maximum bipolar sinusoidal signal between -4 …
neusp's user avatar
  • 97
-2 votes
2 answers
64 views

Replace a diff-amp with an in-amp in a voltage-controlled current source using LTspice

I am simulating the following voltage-controlled current source using LTspice. This design works for the application where it is going to be applied. However, the output current is not completely inde …
neusp's user avatar
  • 97