Timeline for Bottom half of IC appears not working?
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jul 5, 2013 at 10:48 | comment | added | RedGrittyBrick | @Jacob: "ALWAYS" is a bit too categorical, but it won't hurt during testing. | |
| Jul 5, 2013 at 10:44 | comment | added | Jacob Clark | So to summarise, in future I should always tie down unused INPUTS on an IC and I should ALWAYS use a transistor to drive the output and not the IC directly? | |
| Jul 5, 2013 at 10:40 | comment | added | RedGrittyBrick | One way is to use a NPN transistor with a 4.7 kΩ resistor to limit base current and (say) a 220 Ω resistor to limit collector current. | |
| Jul 5, 2013 at 10:29 | comment | added | Jacob Clark | Thanks, so if the IC cannot drive the LED, what should I be using to drive it? | |
| Jul 5, 2013 at 10:20 | history | answered | RedGrittyBrick | CC BY-SA 3.0 |