high voltage photo flash capacitor charger

[audioguru2]

Hi Steven,
Your equipment is nicely put together.
Although my broadband connection recieved this page in just a moment, my old computer's RAM had to be boosted a few times and took quite a while to display your big pics.
Let's see more sparks!

 

[steven2]

thankyou audio guru the pictures i took with cx6230 kodack easy share digital camera , im still working on the main high voltage photo flash capacitor charger with the battery and disc flyback and driver circuit all in the one. so as soon as i get the rest of the stuff i need ill put it together and post it into the topic , soon ill rackem, stack em ,pack em, and post em.

 

[steven2]

here is the allmost completed high voltage photoflash capacitor charger, all installed into the nearly completed new pvc circuit box, all that needs to be put in is the n channel mosfet. this goes onto a bolt at the rear ,that holds the heatsink on . youll notice the 3 wires runing from a tag strip ,with the mov on it, these 3 wires run through 3 holes and to the n channel mosfet at the rear of the pvc box. i used a few terminal blocks to secure the diodes and other bits . the neon indicator runs out a hole through the front panell and the disc shaped flyback transformer i had to make up some kind of pvc suport for it that secures to the bottom of it and is allso secured to the box, the electros are held onto the rear of the circuit box with home made pvc electrolytic capacitor holders the wire run from that electro bieng used to its position on the prototype board, on the same board are larger pins i used to run the wires to for the ic which run to the ic socket board that sticks out the front so the main components are exsternal and the 555 timer and n channel mosfet and electrolytic capacitor . of which i put 2 at the rear as they are different sizes and ill decide which one to use then remove the other or keep it there as a spare , with the amount of screws i used to secure the box panells ,its easy to have some of the main parts exsternal so there easy to replace

View attachment 36216

 

[steven2]

the flyback driver circuit i used for this is basically the the same circuit deisgn i stick to

View attachment 36217

 

[steven2]

View attachment 36218

 

[steven2]

im biulding this auto matic turn off relay circuit i found on the net to intergrate into the high voltage photo flash capacitor charger circuit , the idea is to get it to turn off the circuit to the capacitor after a set time of chargeing, to help prevcent any overchargeing hopefully if i get the timeing right with the right capacitorm then all i need to do is turn it on, and after so many seconds of chargeing the capacitor it will switch off m the capacitor chargeing input ,

 

[steven2]

ive constructed this timed relay circuit i got off the net it works just right anyhow i disconect the positive input wire to the flyback driver circuit in the high voltage photo flash capacitor charger circuit , so all i have to do is switch the main toggle on then push the button and the relay open circuit to the pos input will close thus setting the circuit to charge the hv capacitor for about 10 seconds then the relay opens again and the circuit then turns off. but i got a big problem with this , the relay wont trigger to close the circuit to start the process at all once i put it in so im stuck and cant figure out why the relay wont work when conected to the circuit when it works ok out of the circuit with a test setup

 

[audioguru2]

Hi Steven,
Is the 555 relay driver's output voltage activating? If it isn't working, please post its schematic.
Charge your battery.
Maybe your relay isn't closing because the HV driver circuit 's current is reducing the battery's voltage below the relay's minimum turn-on voltage. Use a 9V relay that will turn-on with about 6.75V, but still be fine with 12V.

 

[steven2]

audio guru i run the relay timer off 12 colts and even tried it with separate 12 volts but when i use it to the circuit it wont work but ony when i use it out of the circuit and with a separate circuit ill post the circuit

 

[steven2]

here it is, the flyback driver circuit posted in the high voltage sec tion is the one i run it to i just break the positive wire to the driver circuit then run it to the relay open contacts and from there back to the positive of the driver circuit so when i switch the power on the circuit stays off untill i push the relay circuit button, then when the relay closes for trn seconds thus powering the driver circuit so the hv caps get charged but somehow the relay wont switch that circuit on if i used it like a switch

View attachment 36280

 

[audioguru2]

Hi Steven,
Where is your "start" button connected on the timer circuit?
That simple timer will activate the relay when power is applied to the circuit until it times-out. Dangerous. A 555 timer circuit won't do that.

Your 4001 timer circuit has 4 gates but you are using only one of them. The inputs of the unused gates should be tied to ground, pins 5, 6, 8, 9, 12 and 13.

You say that the relay won't switch on the high voltage driver circuit. Does the relay activate and apply power supply voltage to the HV driver circuit? If it does, then please post the HV driver circuit's schematic.

 

[steven2]

the flyback driver circuit i used for the flyback transformer audio guru is in the high voltage stuff section flyback driver circuit , it is under. it was originally the vortex cannon circuit but i left off part of the circuit and ran the end to my disc shaped flyback transformer thr relay has open contact switch so when i push the button the relay closes for a set time i use 12 volts to power the relay . circuit and the positive input to the driver circuit i interupt that and conect it to the relay open contacts so when i push the button of the relay timer it should activate the relay and close the circuit for me so the chargeing process starts but it wont work

 

[audioguru2]

Hi Steven,
Please answer my questions so that I can help you:
1) On your timer circuit, what does the "start" button connect to. The timer circuit that you posted doesn't have a start button.
2) When you push the button, does the relay activate?

 

[steven2]

audio guru ive made a blunder and i apologise to you ive uploaded the wrong relay circiut here is the correct one however ive got to find the circuit for it its somewhere in my big collection i cant beleave this goof up of mine i sincearly apologise

View attachment 36289

 

[audioguru2]

Hi Steven,
While you are lookin' for the schematic, which IC is it using?
I can't read its label.

 

[steven2]

audio guru its a 555 timer its gona be a 3while to find the circuit its in my thousands of circuits so it will be hard to find but ill look for it

 

[steven2]

audio guru im haveing trouble trying to find that circuit as i was out of printer paper so i used the back of used printer paper and i may of accidently thrown it out so ill have to draw it up from the circuit allready biult, as soon as i get around to it

 

[steven2]

here it is

View attachment 36294

 

[steven2]

c2 is a 0.01uf ceramic capacitor and d1 and d2 are both 1n4148 diodes now if i run lust the positive wire input to the relay and from there to the input post of driver circuit it wont switch the relay but out of the circuit it dose and even with a 12 volts supply to the relay it works if i test it but its just that i cant understand why it wont switch a circuir for me with 2 wires at the relay to close the circuit and switch the pos input on for a set time of 10 seconds

 

[audioguru2]

Hi Steven,
Your 555 timer circuit looks OK but I don't see a local supply bypass cap that most electronic circuits need, and as described in the 555's datasheet. Try adding a 0.1uF ceramic cap and a 10uF electrolytic cap near the 555 from its supply pin to its ground.

1) What is the timer's supply voltage when you are pressing the start button?
2) What is the voltage across the relay coil when you are pressing the start button?
3) What is the resistance of the relay coil?