[Paulo] just tipped us about an Excel based high frequency transistor amplifier calculator he made. We’re guessing that some of our readers already are familiar with these class A amplifiers ...

Just over six inches tall, this portable calculator certainly surpassed the all-transistor calculator released just a year earlier -- that calculator weighed 55 pounds and cost $2,500.

The current flowing through the transistor is the voltage difference 2+ and 2– divided by the resistor value (100 Ω). Figure 2. NMOS diode breadboard circuit. Load the captured data into Excel and ...