Flashing LED

[Darkov]

Isn't there a way to make an LED flash with just a capacitor? I'm only interested in 1 led flashing. I'm using 5mm blue leds and a 9volt power supply.

[TimeScape]

I have seen single LEDs that blink without an external circuit. However, not sure how they will work with others nor how to control blink rate. Most of my applications I need the blinking rate to be the same for several LEDs, thus have not had the opportunity to play with these.

[Kenny]

I have made a couple of models using blinking LEDs to make other expensive blue LEDs blink then just hidden the cheaper flashing red led inside the model. the ones I use have a 3Hz flash rate.

[en'til Zog]

Yup, Kenny's got the trick. The simplest way to blink ONE LED is to use a self flashing LED. ALL, JAMECO, and DIGI-KEY all sell'em.

And if you put one self flashing LED in SERIES with one or two other LEDs, they'll all flash together.

Lessee... 9 volts available, 3.6 for the BLUE LED, leaving 5.4 available for the self flasher. Looks good to me.

[TREKKRIFFIC]

Yup, Kenny's got the trick. The simplest way to blink ONE LED is to use a self flashing LED. ALL, JAMECO, and DIGI-KEY all sell'em.

And if you put one self flashing LED in SERIES with one or two other LEDs, they'll all flash together.

Lessee... 9 volts available, 3.6 for the BLUE LED, leaving 5.4 available for the self flasher. Looks good to me.

So sounds like you could place a flashing green or red LED in series with a white LED and the white LED would flash at the same rate as the flasher ? What about a flasher in series with a GOW bulb ? THis sounds like a great way to get the port and starboard white running lights on the bottom of TOS Enterprise to flash without needing a special chip. I currently have green and red flashers on the underside of my 18" AMT E but I know they should be white but haven't found a white flasher LED anywhere.

[TREKKRIFFIC]

Yup, Kenny's got the trick. The simplest way to blink ONE LED is to use a self flashing LED. ALL, JAMECO, and DIGI-KEY all sell'em.

And if you put one self flashing LED in SERIES with one or two other LEDs, they'll all flash together.

Lessee... 9 volts available, 3.6 for the BLUE LED, leaving 5.4 available for the self flasher. Looks good to me.

So sounds like you could place a flashing green or red LED in series with a white LED and the white LED would flash at the same rate as the flasher ? What about a flasher in series with a GOW bulb ? THis sounds like a great way to get the port and starboard white running lights on the bottom of TOS Enterprise to flash without needing a special chip. I currently have green and red flashers on the underside of my 18" AMT E but I know they should be white but haven't found a white flasher LED anywhere.

[TREKKRIFFIC]

Yup, Kenny's got the trick. The simplest way to blink ONE LED is to use a self flashing LED. ALL, JAMECO, and DIGI-KEY all sell'em.

And if you put one self flashing LED in SERIES with one or two other LEDs, they'll all flash together.

Lessee... 9 volts available, 3.6 for the BLUE LED, leaving 5.4 available for the self flasher. Looks good to me.

So sounds like you could place a flashing green or red LED in series with a white LED and the white LED would flash at the same rate as the flasher ? What about a flasher in series with a GOW bulb ? THis sounds like a great way to get the port and starboard white running lights on the bottom of TOS Enterprise to flash without needing a special chip. I currently have green and red flashers on the underside of my 18" AMT E but I know they should be white but haven't found a white flasher LED anywhere.

Ooops ! Sorry. I duplicated this post !

[Sparky]

There are circuits in 'The Electronic Circuits help' sicky thread from Zog. There for your reference if you can't get the inline flashers to work.