Eg. If I want turn on TV at 5PM I will set on that circuit as 5 PM and it will start TV at 5 PM. Please help me. Is there any circuit that can do this ?
2007-01-25 21:47:21 · 4 answers · asked by Electrosam 3 in Science & Mathematics ➔ Engineering
please consult efy magazine.
2007-01-25 21:56:24 · answer #1 · answered by sonu 2 · 0⤊ 0⤋
Hold your horses, it's not that simple....!
TV sets, nowadays, all have a standby circuit. That means, if you switch the mains power on and off and on..... nothing is going to happen! Turning a TV on requires 2 steps -
1) The power must be on (or plugged-in), AND
2) The remote control button or front panel button on the set must be pushed "ON".
Neither of steps 1) or 2) actually switches the mains power itself on or off, but triggers a circuit inside the TV's power supply which is called the standby circuit.
That means you would have to -
a) either dig into your TV's guts and wire a timer parallel to the "On"-button.
b) or dig into the guts of your remote control (less dangerous but more tricky) and connect a timer in parallel to the "on" button there. "Tricky" because remote control buttons are not straight-forward, but usually form a matrix of command for a little processor inside.
Both require good knowledge of electronics and soldering techniques.
What you need is a Universal Remote Control with real time On/Off timer (not Sleep Timer!). There are only very few on the market (I think Logitech has one in their "Harmony" range), and they set you back several hundred Dollars.
2007-01-26 09:35:56 · answer #2 · answered by Marianna 6 · 0⤊ 0⤋
Home automation - reveiew the following webpages:
http://www.robertlinn.co/LinnHome/servlet/LinnHome?xmlFile=Video.xml&vslfile=site.vsl
2007-02-02 23:50:59 · answer #3 · answered by Anonymous · 0⤊ 0⤋
You can use X10 devices to do this
see www.X10.com
2007-01-26 05:54:05 · answer #4 · answered by Boofie 6 · 0⤊ 0⤋