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Title
Small Power Amplifier (T1679E)
4-tube reflex (T1662E)
Pocket Analyzer (T1584E)
4W Amplifier (T1516E)
Electronic flasher (T1288E)
Intermittent Alarm (T1158E)
Timer (T1171E)
Stroboscope (T1752E)
Pocket Tube Radio (T1621E)
Electronic Flash (T1342E)
Battery Charger (T1300E)
Preamplifier (T1222E)
2-tube super heterodyne (T1210E)
Miniature Tube Amplifier (T1183E)
Commercial Sweep Generator (T1781E)
Grid dip (T1741E)
VTVM or converter (T1719E)
Amplified Wheatstone Bridge (T1680E)
Bias power source (T1585E)
UV201A reflex receiver (T1558E)
Modulated light receiver (T1532E)
Small Amplifier (T1517E)
Oscillator (T1289E)
Audio Amplifier (T1244E)
Relaxation with tube (T1753E)
Complex reflex receiver (T1663E)
Tube Transmitter (T1622E)
Signal Generator (T1343E)
AC DC Amplifier (T1301E)
Signal injector (T1223E)

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TV Pattern Generator (CB4315E)
This 1989 circuit generates horizontal bars on the screen of an old analog television. The circuit...
Digital Variable Capacitor (CB189E)
The values of the capacitance between output A and ground can be programmed digitally in 18 steps...
Stereo Balance Indicator (CB12301E)
This circuit is from a 1977 technical documentation. Diodes D1 and D2 can be 1N34 or any other of...