74LS Datasheets

Posted on Feb 5, 2014

Four button RF remote is used to turn ON / OFF four different devices independently. Any of the four outputs can be configured to work independently in either toggle or momentary mode. Outputs are buffered by BC549 NPN transistors and can drive low voltage devices directly or be connected to either 5V or 12V relays (or motors) to control appliance

74LS Datasheets
Click here to download the full size of the above Circuit.

s that use 110V / 220V mains voltage or any voltage of your choice. Multiple remote systems can be used independently to control more than four appliances in the same location by changing the address code on 433MHz receiver and remote. It is also possible to use several remotes to control the same appliance such as garage door.

Leave Comment

characters left:

New Circuits



Popular Circuits

cable tv signal booster amplifier
Solar-Powered High Efficiency Battery Charger
PT7M6101 Ultra Low Voltage Detectors
The many DC to DC converters using IC-555
Pressure Measurement from five-channel low-power programmable sensor signal processor AD7714
Suitable for a low-cost high-quality student homemade amplifier
DDR memory power supply circuit