This circuit uses unusual Motorola components. The circuit was suggested in the 1990 Linear Databook. Transistors can be replaced with equivalents.
June 2016 - It can be obtained from the Mouser the MIROE 2253 that converts text into voice.Trata is a...
Instead of the lamps, LEDs can be used in series with 470 ohm resistors. The circuit is from an...
This very low frequency amplifier has a gain of 1,000 and was found in a 1967 documentation. The circuit is...