Balanced Modulator MC1556G (CB14559E)

We found this circuit in Motorola's Linear Databook in 1990. The semiconductor component used is no longer common today.

15 V x 1 A Power Supply Using the LM723 (CB862E)
The output voltage is adjusted by the trimpot. The power transistor mist be mounted on a heatsink. The 3.9...
LED with color switch (CB20909E)
Found in an old Popular Electronics this circuit causes a bicolor LED to alternate the colors of...
Voltage Follower (CB4897E)
In a voltage follower the gain is unitary. Input impedance is too high and output impedance too low....