Search found 326 matches
- Tue Mar 23, 2021 12:06 pm
- Forum: General Discussion
- Topic: 555 Timer ic question please
- Replies: 10
- Views: 11582
- Tue Mar 23, 2021 7:32 am
- Forum: General Discussion
- Topic: 555 Timer ic question please
- Replies: 10
- Views: 11582
- Mon Mar 22, 2021 6:47 pm
- Forum: General Discussion
- Topic: 555 Timer ic question please
- Replies: 10
- Views: 11582
Re: 555 Timer ic question please
You want additional triggers during the delay ignored till after the delay Correct. That's what the TS asked, will additional triggers be ignored or extend the Delay time. Answer: Yes the triggers will be ignored unless the triggers extend past the Delay time NV 555 monostable timing chart.png
- Mon Mar 22, 2021 1:51 pm
- Forum: General Discussion
- Topic: 555 Timer ic question please
- Replies: 10
- Views: 11582
Re: 555 Timer ic question please
The direct answer to your question is YES as long as any additional triggers do not exceed the Delay Time.
- Fri Aug 21, 2020 2:50 pm
- Forum: General Discussion
- Topic: Isolate/split power supply
- Replies: 2
- Views: 3791
Re: Isolate/split power supply
I'm looking at some of those units on Amazon that might work.
What is your battery voltage?
What's the maximum current to monitor?
You can always use separate analog meters.
SG
What is your battery voltage?
What's the maximum current to monitor?
You can always use separate analog meters.
SG
- Fri Aug 07, 2020 11:42 am
- Forum: General Discussion
- Topic: looking for a timer
- Replies: 13
- Views: 15372
Re: looking for a timer
Nice find. Available through Amazon but delivery sometime in October.
Steve G
Steve G
- Mon Aug 03, 2020 5:11 pm
- Forum: General Discussion
- Topic: looking for a timer
- Replies: 13
- Views: 15372
- Tue Apr 03, 2018 6:11 am
- Forum: General Discussion
- Topic: heat sink cooling
- Replies: 5
- Views: 5742
Re: heat sink cooling
I don't think it would make much difference if the chassis is ventilated properly. I would prefer to draw the heat out if possible.
SG
SG
- Wed Mar 28, 2018 6:51 pm
- Forum: General Discussion
- Topic: Need help with a circuit again
- Replies: 9
- Views: 6734
Re: Need help with a circuit again
One other thing, I was wondering if I could put the gate of the triac with the 1k resistor instead of the led, would that trigger the triac Not in this case as the triac will be on continuous. Best solution is to use an opto-isolator. For 10 amp loads you can use the MOC3020 to drive a high current...
- Tue Mar 27, 2018 5:23 am
- Forum: General Discussion
- Topic: Need help with a circuit again
- Replies: 9
- Views: 6734
Re: Need help with a circuit again
Easiest solution is to use a solid state relay or what they call an opto-triac. Depending on the current required a MOC3020 may be adequate.
SG
SG
- Thu Mar 22, 2018 3:49 pm
- Forum: General Discussion
- Topic: Security light motion sensors in parallel
- Replies: 11
- Views: 8391
Re: Security light motion sensors in parallel
You will have two dimmer circuits in parallel so as I said it may work OK or not. You would have to turn the DualBrite switch to OFF on one of the units.
SG
SG
- Wed Mar 21, 2018 2:50 pm
- Forum: General Discussion
- Topic: Security light motion sensors in parallel
- Replies: 11
- Views: 8391
Re: Security light motion sensors in parallel
Yeah there will be feedback through each other. The motion from one detector will override the dim function on the other. Will it cause any damage? Not sure without seeing a schematic. Can you use a two bulb fixture and run the red wires separate? Or run a 3 wire cable from the light to the junction...
- Thu Jan 25, 2018 5:47 pm
- Forum: General Discussion
- Topic: Adult Content!
- Replies: 6
- Views: 8789
Re: Adult Content!
Man is it slow around here.
- Tue Jan 02, 2018 5:37 am
- Forum: General Discussion
- Topic: LM 1084/338/317/etc... voltage drop at < 1A
- Replies: 23
- Views: 27300
Re: LM 1084/338/317/etc... voltage drop at < 1A
Cathodes soldered together and wired to transformer's center tap . That can't be correct! The cathodes should be connected to the filter capacitors, the center tap of the transformer is connected to ground for full wave rectification However from your description of the supply voltage, 22 volts no ...
- Fri Dec 22, 2017 3:36 pm
- Forum: General Discussion
- Topic: Need help with a circuit
- Replies: 6
- Views: 5124
Re: Need help with a circuit
Schmitt trigger circuit. Two transistors and some parts rearranged. D2 normally on. Press S1 and D2 turns off and D1 turns on and stays on for two seconds after switch is released.
Cheers and Happy Holidays,
Steve G
Cheers and Happy Holidays,
Steve G