FSK modem with driver for Atari ST or PC circuit

The FSK demodulator is an electronic device that converts the FSK signal into a serial digital signal. FSK modulation is utilized to transmit digital serial data. The FSK (Frequency Shift Keying) demodulator serves a critical function in digital communication systems by...

Remote-Controlled Telephone/Fax Machine Switch

This system uses a transmitter operating at approximately 100 kHz to control a remote receiver. A line splitter can connect the transmitter to the active telephone line. The transmitter is a CMOS oscillator equipped with output buffer stages to drive...

CMX469A 1200/2400/4800 Baud FFSK/MSK Modem

CMX7031Q1 is a sub-package of CMX7031. For the full description, please refer to CMX7031. The datasheet for CMX7031Q1 can be downloaded below. By Consumer Microcircuits Limited. The CMX7031Q1 is a specialized integrated circuit designed for use in communication systems, primarily focusing...

FSK Filter circuit

Frequency-Shift Keying (FSK) is a type of frequency modulation where the modulating signal alters the output frequency between specific predetermined values. When issues occur during the demodulation of FSK signals, utilizing an FSK filter circuit can be beneficial. Frequency-Shift Keying (FSK)...

BayComm packet modem

Ensure the correct 9-pin D-type connector is used so that the pins fit properly into the board. The two outer mounting holes for the 9-pin D-type connector should have a diameter of 3mm, while the holes for the pins should...

PC joystick interface circuits

NOTE: There is no guarantee as to the suitability of said circuits and information for any purpose whatsoever other than as a self-training aid. I.E. If it blows your equipments, trashes your hard disc, wipes your backup, burns your building...

Low-cost-fsk-generator

In Frequency Shift Keying (FSK), two distinct frequencies are utilized to represent the binary digits 0 and 1. The core of the circuit comprises two Wien-bridge oscillators constructed with a dual operational amplifier LM1458, each generating one of the two...

PC-Midi Interface

This design is intended for PC soundcards. For an interface suitable for a Mac, please refer to another page. For computers and PCs lacking a soundcard, Harmony Central's interface page may be helpful. The design has been constructed successfully, as...

serial communication introduction

Serial communication using UART or USART of a microcontroller 8051 AVR PIC, software implementation of half-duplex UART and MAX232 interfacing with microcontrollers 8051 AVR PIC. The described system focuses on implementing serial communication via UART (Universal Asynchronous Receiver-Transmitter) or USART (Universal...