Bistable (CB21100E)

This bistable with transconductance operational amplifier was found in early National semiconductor documentation.

Solar spinner (CB20508E)
This solar cell driven circuit makes 4 LEDs run at a speed given by capacitor C2. The circuit is...
Two Transistors Amplifier Stage (CB14026E)
This circuit is from an English technical documentation and can be implemented with BC558...
Symmetric Power Supply (CB15712E)
The voltage of this symmetrical power supply depends on the regulating integrated circuits, which...