2-JFETs Oscillator (CB22396E)

This LC oscillator was found in English documentation from the 1990s. JFETs may be general-purpose equivalents.

Electroscope (CB497)
Static charges in objects Dan be detected by this sensitive electroscope. The meter indicates when the...
Field Strength Meter (CB22329E)
This simple field strength meter is from a transistor book from the 60's. The transistor is made...
Active Low Pass Filter 741 (CB13322E)
The current drained by this circuit, from a 1976 documentation, is 3 mA and the cut-off frequency is...