Hi --
This is a followup to a question I posted way back and am now finally revisiting years later...
I have a Voltage Regulator: ua78m33c.
It is for powering small, low frequency, simple stuff (like 555 timers, LEDs, etc.) on my breadboard.
The data sheet does not have application notes but it does have a note in the electrical characteristics section:
All characteristics are measured with a 0.33-μF capacitor across the input and a 0.1-μF capacitor across the output.
I was also advised in my last post about this:
You will also need a larger capacitor on the output of the regulator, in the range of 100uF to 330uF. 555 timers create a momentary short from Vcc to ground when they are changing output states. Unless you have a fairly large "bypass" capacitor, the timer can appear to get "hung up".
I will add the these three capacitors. My question is what type of capacitors? Is a basic ceramic OK for the small ones and an Electrolytic for the 100uF? Can I (should I?) go outside of these ranges?
I see on eBay for the 0.33uF I can get either: Dipped Tantalum, Mylar, Multilayer Mono Ceramic, Nippon Chem, Radial Aluminum Electrolytic, Radial Poly, Metalized Polyester, Film Capacitors or Ceramic MLCC -- will they all work or is one preferred over the other?
Thank you!!!
This is a followup to a question I posted way back and am now finally revisiting years later...
I have a Voltage Regulator: ua78m33c.
It is for powering small, low frequency, simple stuff (like 555 timers, LEDs, etc.) on my breadboard.
The data sheet does not have application notes but it does have a note in the electrical characteristics section:
All characteristics are measured with a 0.33-μF capacitor across the input and a 0.1-μF capacitor across the output.
I was also advised in my last post about this:
You will also need a larger capacitor on the output of the regulator, in the range of 100uF to 330uF. 555 timers create a momentary short from Vcc to ground when they are changing output states. Unless you have a fairly large "bypass" capacitor, the timer can appear to get "hung up".
I will add the these three capacitors. My question is what type of capacitors? Is a basic ceramic OK for the small ones and an Electrolytic for the 100uF? Can I (should I?) go outside of these ranges?
I see on eBay for the 0.33uF I can get either: Dipped Tantalum, Mylar, Multilayer Mono Ceramic, Nippon Chem, Radial Aluminum Electrolytic, Radial Poly, Metalized Polyester, Film Capacitors or Ceramic MLCC -- will they all work or is one preferred over the other?
Thank you!!!
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