EcoRenovator - View Single Post

Robaroni · 02-16-19, 08:39 AM

Poor Man,
Here's a small cheap circuit that should turn off your LED during the day. All the parts are inexpensive and easy to get.

How it works:
The "ts3702" is a comparator, it compares the voltage on pin 2 with the voltage on pin 3. If pin 3 is higher the output pin 1 goes high and turns on the MOSFET "irfz44" which lights the LED lamp. You can change the light when the LED goes off and on by changing "R1". You can even put a variable resistor in its place but make sure to add at least a 10k resistor in series with it or you may damage the "GL5537" which is the photo resistor that senses when it's dark.
Rob

02-16-19, 08:39 AM	#19
Robaroni Journeyman EcoRenovator Join Date: Jun 2013 Location: Delhi, NY Posts: 332 Thanks: 20 Thanked 53 Times in 40 Posts	Poor Man, Here's a small cheap circuit that should turn off your LED during the day. All the parts are inexpensive and easy to get. How it works: The "ts3702" is a comparator, it compares the voltage on pin 2 with the voltage on pin 3. If pin 3 is higher the output pin 1 goes high and turns on the MOSFET "irfz44" which lights the LED lamp. You can change the light when the LED goes off and on by changing "R1". You can even put a variable resistor in its place but make sure to add at least a 10k resistor in series with it or you may damage the "GL5537" which is the photo resistor that senses when it's dark. Rob Attached Images Last edited by Robaroni; 02-16-19 at 09:12 AM..