Audio/Video Switcher


Posted on May 8, 2012

This circuit is a two-channel baseband video switcher. Buffer amps Ul/Ql, U4/Q4, and associated components produce a b


Audio/Video Switcher
Click here to download the full size of the above Circuit.

uffered 75- video signal, which is routed to switching network K1/K2/K3. Relay K1 selects either of these two video amplifiers and feeds J7. K2 also routes the output of either video amplifier to K3, which passes the selected video channel to J8 or connects J9 to J8. U2 and J3 are audio amplifiers, which drive U7 and J8 (CD4053 analog switches) to route audio from J1 and J2 to either J14/J15, or J10/J11. Also, audio from J12/J13 can be routed to these jacks.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

White LEDs Flashlight
Minimum-component-flasher
Simple Electromagnetic Field Detector Schematic
The multi-channel segregation with backup battery exports the switching power supply
portable solar lantern circuit uses 6
tube power amplifier with el34 35w
Dynamic Mic Preamplifier Circuit
High-Quality Stax Headphone Adapter
Automatic Light Dimmer
Thermocouple cold junction compensator AD594 595 centigrade thermometer circuit diagram
Frequency electromagnetic RBI timer CD4017



Top