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Relay Diode Circuit
How can i create a delay circuit without using the 555 or 556 timers, only using resisters, capaciters etc...?
Hey, i am a fire alarm lover. My control panel is homeade using a 160 in one electronic kit. I have 1 bell and strobe, 3 pull boxes.
I have a latchning circuit created using a relay. But i want to create a delay circuit. (All pull boxes work with the latching circuit)
I have been told to use a 555 timer but at this time i dont have a breadboard or the timer. I herd i could use a capaciter and resister, but cant figure out how to wire it up.
I have capacicters, resisters, transisters, diodes etc.. all on the board (kit) i can use.
What i want is to have it so when any of the intiating devices are activated such as pull stations, it has a 1-3 second delay before the relay actives and then activates the alarm.
Anybody that knows how to help me would be greatly appreciated.
Thanks so much, Chris.
Study this site using RC circuit. You may have to connect a switching transistor to do the switching ON/OFF. However, you may not get an accurate timing due to the resistor/capacitor tolerance.
Good luck.
http://physics.bu.edu/~duffy/semester2/c11_RC.html
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Relay Clock Circuit With Snubber Diodes
What fun circuits can I make with the following electrical components?
I have:
A 555 timer (soon to be 2)
A Thyristor
Three transistors
Switches
4 LEDs (Soon to be 10)
A diode
A variable resistor
Five Relays
A lot of resistors and capacitors of various values
Breadboard
Lots of wires
Soon: A 4017B decade counter
I also have a few quid loose to buy any cheap components... But nothing major!
Thanks
Just putting together a bunch of components is a total waste of time. You need to know what the components do. Then you can practice estimating what will happen and then measuring what actually happened.
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