| ??? 05/13/08 04:09 Read: times |
#154718 - Higher heat dissipation Responding to: ???'s previous message |
Suresh said:
I was using an Hfe of 100 and the Motor is working well. What will be the effect of this circuit? How is it affecting the correctness of operation of Motor? Will i experience any malfunction in future? The only effect is that the Ucesat is not as low as it could be when using a much higher base current. The result is more heat dissipation and a less reliable performance: A second "identical" circuit might show a dangerous high Ucesat and can burn... Kai |
| Topic | Author | Date |
| Clarification on choosing Hfe | 01/01/70 00:00 | |
| search again | 01/01/70 00:00 | |
| Its max current is 0.6A | 01/01/70 00:00 | |
| so if You continue playing .. | 01/01/70 00:00 | |
| My doubt is only on choosing Hfe.. | 01/01/70 00:00 | |
| read again | 01/01/70 00:00 | |
| Any hfe will work | 01/01/70 00:00 | |
| Exactly! | 01/01/70 00:00 | |
| How driving it? PWM or ON/OFF? | 01/01/70 00:00 | |
| PWM and ON/OFF | 01/01/70 00:00 | |
| Use a MOSFET | 01/01/70 00:00 | |
| See the typical transistor curves | 01/01/70 00:00 | |
| Here comes the spoon... | 01/01/70 00:00 | |
| You replies are clear.. | 01/01/70 00:00 | |
| Higher heat dissipation | 01/01/70 00:00 | |
Thank You! | 01/01/70 00:00 |