Delay On Timer Using BC547 Transistor & Relay
Power-ON Delay Switch which can be used in all applications requiring a delay during power-on from 10 seconds onwards.
- Supply input 5 VDC
- Relay output SPDT relay
- Relay specification 5 A @ 250 VAC
- Preset adjustable range function
- Power-On LED indicator
- Screw terminal connector for easy relay output connection
- Four mounting holes of 3.2 mm each
- PCB dimensions 44 mm x 42 mm
DELAY ON TIMER USING BC547 TRANSISTOR SCHEMATIC PCB LAYOUT & BOM
What is necessary for use this in a 12V circuit ?
You Can use the same circuit for 12V, change following components
Relay RE1 = 12V, Resistor R2 2.2K,