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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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Balanced Microphone Preamplifier I (CB4943E)
This circuit was obtained from an American publication of the 80's. The integrated circuit is of the...
Operational Tone Control (CB16671E)
This circuit is from 1992 documentation. In it we have the way to implement a Baxandall control using...
Simple Multimeter (CB9880E)
This simple circuit uses a 200 uA microammeter of the type found as VU, being able to measure...