The project is about the size of a standard AA battery which aims to build a single transistor FM transmitter. Having a power supply of 1.5V cell is the main advantage of this circuit. The battery is ...

Any sound can be sent to any FM radio from any room by this simple 2-transistor audio transmitter. Any sound can be sent to any FM radio from any room by this simple 2-transistor audio transmitter.

When the Regency TR-1 transistor radio came out onto the market in the 1950s, it was hailed as a modern marvel of microelectronics. With only four transistors and a handful of other components, the TR ...

Abstract: Summary form only given. The receiver circuit includes a mixer, oscillator, 3 IF stages, detector, audio stages, beat frequency oscillator and a frequency calibrator. A sensitivity in the ...

The Si47xx series of integrated circuits from Silicon Labs is a fascinating series of consumer broadcast radio products, chips that apply SDR technologies to deliver a range of functions that were ...

Galvanically (that is, optically or electromagnetically) isolated 4- to 20-mA current loops offer robust noise immunity and tolerate long cable runs. These advantages, combined with simple unshielded ...

Abstract: In this paper, 60V high-voltage drain pulse modulation technology based on N-channel MOS transistor and odd number (5 routes) power division combining technology is adopted. Through the ...