| Author | Views | Views Today | Rank | Comments |
| jawaharlal@excite.com | 51,855 | 4 |   |
31 |
| Author | Views | Views Today | Rank | Comments |
| jawaharlal@excite.com | 51,855 | 4 | |
31 |
| When activated by pressing a button, this time delay relay will activate a load after a specified amount of time. This time is adjustable to whatever you want simply by changing the value of a resistor and/or capacitor. The current capacity of the circuit is only limited by what kind of relay you decide to use. |
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Related Circuits |
Comments |
| I'm looking for a timmer or timing circuit for a start of day/break/lunch/end of day bell.What is needed is a timmer that will ring the bell at the start of a period and ring again at the end of the period.The bell system already exsists and the owner does not want to replace it. Thank You Patrick S Kennedy Natco Industries West Warwick RI | ||
| I am building a component that needs to activate a 12vdc 2amp solenoid for 2 or 3 seconds after a trigger switch has sent a signal. The trigger switch is human activated and will not stay open for the full 2 or 3 seconds. Is there a simple circuit for this operation that you know of? | ||
| Hi there. I want to make a paintball 'bomb' that after 10 min activates the relay, which is connected to an alarm siren, but also 1 min from the end (at 9min.) it activates another siren, a warning siren... I already have the sirens. I also wanted a beep sound every second so that the bomb can be traced. I don't mind having 3 different circuits but need help to make them... Been trying to but the 555 timer is on at the start but the 4011 might work... Thanks in advance | ||
| te first time you switch S1 on in works ....but te second time te circuit doesnt works as it should ...te capacitor beeing carhged from the first time ...there will be no delay on te second push of S1 ( excuse my english :D ) | ||
| With reference to the Time Delay Relay page, if activated (by S1), the circuit should keep the relay on for the fixed time, say 20 seconds. However, after it switches off at the end of the first 20 seconds, it is not clear whether the relay will switch on again, i.e. S1 continues to be active. | ||
| Can a 555 timer be used to delay the output for 1 second after the footswitch is actuated?If so how is it configured. | ||
| I need to trigger an X-ray tube 1 sec after an imager and disconnect when the switch is open.I'm using a footswitch.I figure 1 mega ohm and 1 microfarad cap should give me 1 second.It may need to trigger up to 120 volts ac by relay.Will your circuit do this for me and do you have any suggestions? | ||
| wat resistor can i use to make the time delay 11 cct trigger after 2hours? peter | ||
| I want to know how much volt and uf is C1 and R1 and I can use 12vdc relay for this time delay relayII and if I want for 10 to 15 second delay shut off it can be modified | ||
| I have viewed both of your circuits and I have a question. I need to make a time delay device that when I press S1 there is a 30 second frame of no output (0 volts) and after those first 30 seconds a 5 second output of 6-12 volts. Whether that'd be in a loop or 1 time only thing doesn't matter much to me. Is it even possible to make something like that happen using the 555 chip? I just wanted to ask before I start to make yet another circuit on my breadboard and find out that it was a waste of effort and maybe components. Here's a little graph I put together showing what I basically hope it'll do. http://i38.photobucket.com/albums/e123/uni_vision_tech/timedelay.jpg Thanks for your time. Sincerely, Bart K. | ||
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