I have a few schematics for 12Vdc flashing circuits using transistors but when I wire them, the leds stay lit and don't oscillate. Don't know enough about electronics to know why... any ideas ? Below is the circuit I'm working with.
Just a blinking LED? Do you have to use the circuit the you first posted?
You said your new so I figure you are just playing around, or are you Modding something?
A DIAC relaxation oscillator. If you look at the data sheet you will see a phase control circuit. If you change the RC time constant and replace the TRIAC gate junction with your resistor and LEDs and put a diode bridge in front, you will get a simple AC powered LED flasher.
Or leave the time constants about the same and use a HP LED for a 60's strobe light
A DIAC relaxation oscillator. If you look at the data sheet you will see a phase control circuit. If you change the RC time constant and replace the TRIAC gate junction with your resistor and anti parallel LEDs and put a diode bridge in front, you will get a simple AC powered LED flasher.
He was saying LED... The DIAC actually works on the same principle- the voltage builds up on the capacitor until the breakdown voltage is reached and it turns on until the the current drops below the holding current.
You can of course get much brighter LEDs than you can neons... assuming you can find any neons these days.