G
Grostle News
I want to alter a circuit:
I took out the flash circuitry (board, bulb and battery) from a Kodak
disposable camera. The main flash electrolytic capacitor is rated at
330v and 84 mfd. ( I think 84 is the value, but don't have with me at
this time)
The cap charge comes from a single AA 1.5v cell. It looks like within
the flash circuit there is a small transformer with a transistor
oscillator circuit that does the duty of raising the voltage.
I have a non-photographic application for this type of circuit. After
removing the flash bulb I need to change the cap by replacing it with
one rated at 600-660v.
QUESTIONS (2):
(1) Would it be possible to use TWO cells in series [3v] instead of just
the one in order to charge the replacement cap at it's 660v rating?
1.5v cell---> 330v
2 × 1.5v cells [3v]-----> 660v ?
(2) Would other devices of the circuit need to be changed if the input
voltage is doubled as described?
I like the idea of getting use out of something that is commonly
available and that would ordinarily be thrown away (disposable) after
using.
Important safety reminder: if you ever experiment with one of the flash
units don't forget to discharge the capacitor before handling. When I
discharged the one in my flash circuit it was remarkably loud and
powerful enough to leave a small bead of molten chrome steel on my
screwdriver!
I took out the flash circuitry (board, bulb and battery) from a Kodak
disposable camera. The main flash electrolytic capacitor is rated at
330v and 84 mfd. ( I think 84 is the value, but don't have with me at
this time)
The cap charge comes from a single AA 1.5v cell. It looks like within
the flash circuit there is a small transformer with a transistor
oscillator circuit that does the duty of raising the voltage.
I have a non-photographic application for this type of circuit. After
removing the flash bulb I need to change the cap by replacing it with
one rated at 600-660v.
QUESTIONS (2):
(1) Would it be possible to use TWO cells in series [3v] instead of just
the one in order to charge the replacement cap at it's 660v rating?
1.5v cell---> 330v
2 × 1.5v cells [3v]-----> 660v ?
(2) Would other devices of the circuit need to be changed if the input
voltage is doubled as described?
I like the idea of getting use out of something that is commonly
available and that would ordinarily be thrown away (disposable) after
using.
Important safety reminder: if you ever experiment with one of the flash
units don't forget to discharge the capacitor before handling. When I
discharged the one in my flash circuit it was remarkably loud and
powerful enough to leave a small bead of molten chrome steel on my
screwdriver!