Search Results for: vhf to hf converter
PCB circuit diagrams Motor control and motor drive for remote cars
PCB circuit diagrams Motor control and motor drive for remote cars
Circuit consists of WZ-X01 RF module, Holtek HT-640 encoder and 8-bit A/D converter. U1 ADC0804 converts the analog voltage to digital data; U2 encodes that data (D0~D6) along with D6, D7 and transmitting through the RF transmitter module. The potentiometer VR1 varies the voltage to [...]
Posted in Electronic Circuit Tagged cars, Circuit, control, diagram, drives, Motor, pcb, remote Leave a comment
Circuit Diagram Converter trigger signal causes the 555 to discharge the capacitor for synchronization
LM1881 is used to do all the grunt work of separating the sync signals from the composite video. The chip provides the vertical sync on pin 3 for the vertical oscillator, and composite sync on pin 1 for the horizontal oscillator. The intensity signal comes from the composite video signal itself, but is negative. I [...]
Posted in Electronic Circuit Tagged 555, Capacitor, causes, Circuit, Converter, diagram, discharge, Signal, synchronization, trigger Leave a comment
Circuit diagram LM1881 video sync for tv and lcd monitor separator, a 74HC4066 as a simple analog switch
The chips include an ATmega88 as the main controller, an AD9280 ADC, an LM6134 high-speed quad op-amp, an LM1881 video sync separator, a 74HC4066 as a simple analog switch, and an RS-232-level converter.
LM1881 Video sync separator extracts timing information including composite and vertical sync, burst/back porch timing, and odd/even field information from standard negative going [...]
Posted in Electronic Circuit Tagged a 74HC4066, Analog, Circuit, diagram, LCD, LM1881, Monitor, separator, simple, Switch, sync, tv, video Leave a comment
Making USB using RS232 converter