Crystal converter (CB7327E)

This circuit was found in a Popular Electronics from the 90's. The circuit can be used to convert signals to frequencies up to 25 MHz.

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8 W amplifier TDA1908 (CB15226E)
The supply can be between 4 and 10 V in this circuit and R4 is necessary when the supply is less...
1 to 4 W amplifier TDA1015 CB15972E (CB15972E)
This is an integrated recommended for portable amplifiers, recorders, and battery powered radios. It...
Linear sawtooth generator (CB7802E)
Found in American documentation, this circuit generates linear sawtooth signals using a constant...