Multi Tube Amplifier (T446E)

Obtained in MIT documentation this circuit uses several tubes to obtain a large gain in the amplification of small signals.

Tone decoder (CB13936E)
This decoder filter was found in a 1975 documentation. The integrated circuits can be 741. The...
Antenna Preamplifier (CB19575E)
This circuit for medium and short-wave ranges, according to the transistor used, was obtained in...
2.2 A LED Driver (CB12550E)
Linear Technology (www.linear.com) has in its component line the LT3518, recently launched, which...