Powerful IR Emitter (CB26030E)

This modulated circuit was found in the November 1997 Electronics Now magazine. The power transistor can be any MOSFET,

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FET Preamplfier (NI022E)
This circuit is indicated to operate from high impedance sources as piezoelectric transducers....
Positive Edge Differentiator (CB13217E)
We found this circuit in a Motorola publication from the 70s. The circuit can be implemented with...
78xx Bench Power Supply (CB19049E)
This double bench source has a fixed voltage output and an adjustable voltage output with current up...