My 555 timer isn't doing what it should do, or maybe it's just me?
I have a 555 timer circuit operating as an extended duty cycle astable timer. The frequency generated is used to switch high power LED's which 'strobe' to freeze the motion of a spinning sculpture. Basically a stroboscope. This is all good, I have tantalum type capacitors, metal foil type resistors and they all give a good clear signal. The only problem is that over time (90 sec) the frequency of the flashing LEDs increase so the spinning wheel is not frozen, but scrolling the other direction. The same thing happens time and time again.
What's going wrong? I have 5, 47uF capacitors in series could this cause some kind of build up over time? Is it the type or quality of the 555 timer? The 555 operates a mosfet which switches the high power LEDs, could there be something there? The wheel is spun by an invertor driven three phase motor.
Please help. I feel like I'm going round in circles, that's the problem
I have a 555 timer circuit operating as an extended duty cycle astable timer. The frequency generated is used to switch high power LED's which 'strobe' to freeze the motion of a spinning sculpture. Basically a stroboscope. This is all good, I have tantalum type capacitors, metal foil type resistors and they all give a good clear signal. The only problem is that over time (90 sec) the frequency of the flashing LEDs increase so the spinning wheel is not frozen, but scrolling the other direction. The same thing happens time and time again.
What's going wrong? I have 5, 47uF capacitors in series could this cause some kind of build up over time? Is it the type or quality of the 555 timer? The 555 operates a mosfet which switches the high power LEDs, could there be something there? The wheel is spun by an invertor driven three phase motor.
Please help. I feel like I'm going round in circles, that's the problem