High Stability Emitter Follower (CB25618E)

We found this high input impedance, low output impedance amplification stage in the October 1993 issue of Electronics Now.

Multiple Feedback Band Pass Filter (CB6249E)
This circuit is suggested by Texas Instruments in old documentation. The components depend on the...
144 MHz preamplifier (CB22013E)
Found in an old English documentation, this circuit is intended to amplify signals in the 2-meter ham...
Logic Level Detector (CB406)
This circuit indicates the logic level of a digital signal. LEDs can replace the lamp, wired with...