N.G.

Can you please give me a reference schematic for CD4013 that operates a 12v relay with a trigger voltage between 0.6V and 1V ? And what can i do if my IR motion detector made from IR led and the IR sensor (it looks like a black led, even the pin length difference is same) gives under 0.6V ? shod a put 1 more transistor before the trigger transistor or shod i build a 1 transistor audio amp and use it ?

I got a bag full of ne555 and the cmos version too (is not the texas instruments version but some cheap china stuff) and i want to use a it with a infrared led and a "infrared sensor" (it got 2 pins, i guess is a fototransistor that operates in ir domain) and i will make a reflective sensor, when you move the hand abou it the ir light will reflect back to the sensor and it will trigger the toggle. Fore better range i pulse the led at around 38khz with a 555 (lucky i found a nice application that makes all the math for me and gives me directly the resistor and capacitor values i need for the timing the i asked). The CD4013 is ideeal for this but it got a major drawback, if i pover him at 12v it will need a trigger voltage of 12v too. There i will need to use a transistor or a op-amp. The transistor whud be easy, but i need 1 that whud accept a lower voltage at base and is capable of conducting 12v from C to E, any ideea on a common transistor that can do this ? PS The project is intended to run from a 12 power supply and act as a switch for 220v application. Thanks for your help.

I got a question about the Toggle ON / OFF Switch author: Michail Papadimitriou The ne555 can operat from 3-18V, can i use a 12V relay and power all with 12V, do i need to change some of the resistor values ? Sorry for a my noob question but i dont have mutch experience with the 555 ICs. http://www.electronics-lab.com/projects/misc/012/index.html