Standard 1 MHz Oscillator (CB9653E)

We found this circuit in an old American documentation. Transistors can be modern equivalents.

4.1 V x 35 mA Power Supply (CB13206E)
This small source is suitable for low consumption equipment that uses batteries. The circuit is...
Transistor Monoestable (CB10443E)
This interesting circuit was found in an Argentinean Radio Chassis Television magazine from March...
Sensitive Crowbar (CB5887E)
This circuit is from an 80's documentation, firing when the input voltage exceeds 5 V. The SCR can...