MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
| 1. |
The timing network that sets the output frequency of a 555 astable circuit contains ________. |
| A. | three external resistors are used |
| B. | two external resistors and an external capacitor are used |
| C. | an external resistor and two external capacitors are used |
| D. | no external resistor or capacitor is required |
| Answer» C. an external resistor and two external capacitors are used | |