power on delay using a 555 chip
Hello,
Is it possible to give a delay of 20mins upon power on before a LM555
can be used as a oscillator in its astable mode? I am designing a
circuit which has to follow this sequence: -
step1: On application of power to the 555 its output should be 0volts
step2: Upon completion of 20mins the 555 should start to give pulses at
its output.
step3: On completion of 20mins the output of the 555 is given to the
gate of a triac to fire it up.
thanks is advance.
.
Relevant Pages
- Re: power on delay using a 555 chip
... Is it possible to give a delay of 20mins upon power on before a LM555 ... can be used as a oscillator in its astable mode? ... Your repeatability is going to be almost entirely dependent ...
(sci.electronics.basics) - Re: Yo! RF dudes!
... would need less power. ... check the LTspice circuit I posted. ... Since the coaxial resonator has 10X or higher Q, ... But if you are happy with the current 50MHz oscillator the way it is, ...
(sci.electronics.design) - Re: Yo! RF dudes!
... would need less power. ... check the LTspice circuit I posted. ... Since the coaxial resonator has 10X or higher Q, ... But if you are happy with the current 50MHz oscillator the way it is, ...
(sci.electronics.design) - Re: Tube Radio Power Supply
... looking at plans for building a mains power supply, ... Regens were very picky about the power that they'd run off of -- you get ... Given that they are at times an oscillator, and the rest of the time often ... Charles Kitchen, who's done quite a bit of work on solid state regens, ...
(sci.electronics.basics) - Re: New Oscillator
... I have changed the capacitor and completed the power supply. ... I found I could only get 16 watt out of the oscillator with the 50 volt ...
(sci.physics.fusion) |
|
