Sound delay lamp circuit diagram


Posted on Mar 28, 2007

As shown in the telephone table lamp, night ringing or when off-hook light will automatically light up, hang up after delay 45s lamp self-extinguish. Normally used for general


Sound delay lamp circuit diagram
Click here to download the full size of the above Circuit.

use lamp dimmer, without light switch. When the lamp for the delay, simply click delay touch of a button, the light will delay self-extinguished after 45s. The circuit is set in one of a variety of purposes, mainly by optical coupling circuit, light control circuit, a negative pulse generating circuit, monostable trigger circuit, the thyristor switch circuit and power supply circuit. Figure, IC1 use 4 feet PC817 models; IC2 NE555 equivalent type when base integrated circuit. VT best selection 9014,3DK4 etc. switch; VS selection 1A, 600V ~ 800V Triac, such as 97A6,97A8 other models; regulator is 1/2W 12V as 2CW60 like. MG choice of light resistance of less than 1k MG45 models. C5 best selection of CBB polypropylene capacitors, voltage 400V or more. H with 25W or 45W bulbs.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Parallel port provides high-resolution temperature sensing
Nickel Metal Hydride ( NiMH ) Charger
Scrolling text in LED dotmatrix display
SimpleThermometer
touch switch circuit with 3 transistors
3 voltmeter method of measuring choke
Transmit Infrared Signals Through Walls
Sound Card Interfacing for RTTY PSK31 and SSTV
El-Cheapo Fluoro Ballast
power supply circuit
Making a LM4766 dual 40W amplifier circuit
Telephone relay circuit
HD a 3A limit energy-saving three-phase power protection circuit



Top