30 MHz Amplifier (CB5939E)

This low noise circuit was obtained from a 1980s US RF publication. Transistors used are uncommon today and the gain is 19 dB..

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Schottky Power Reversal Protection (CB5897E)
This circuit prevents damage by accidentally reversing the power supply polarity. The circuit is...
TTL LED Driver (CB840E)
This circuit acts as a NOR gate for LED drive from TTL outputs. The circuit must be powered from a 5...
RF Probe (CB5873E)
This circuit is from the 80's, making use of components of the time. What the circuit does is...