Found in Motorola's 1967 documentation this circuit can use any general-purpose transistor. The signal should be applied to a good amplifier. The noise diode can be replaced with a common one.
This oscillator was found in a 1967 EEE. The transistor supports a modern equivalent. The power...
This second-order low-pass Salen-Key filter was obtained from an American 1980s documentation. Formulas...
This interesting circuit of a 1988 documentation consists of a mouse trap where the sensor is left to...