| ??? 11/08/11 13:18 Read: times |
#184587 - You sure? Responding to: ???'s previous message |
John M said:
My electronics-self says I should match the ADC input impedance to the sensor(analog signal)'s output impedance. I shall choose the resistors to match the sensor's output impedance. Impedance matching is a great way to maximize the amount of power. But think about that again. When you buy an expensive multimeter - does it have a setting where it allows you to adapt the impedance, or does it just settle for a high impedance to reduce the amount it will affect the measurement circuit? So in your case - are your system designed for transfer of energy, or is it a system intended to sense the value of a signal? Next thing - do you expect big problems with reflections of your 4kHz input signal? |
| Topic | Author | Date |
| Looking for 8051 that supports high speed I2C | 01/01/70 00:00 | |
| SPI | 01/01/70 00:00 | |
| gotcha | 01/01/70 00:00 | |
| 3.4 MHz I2C | 01/01/70 00:00 | |
| RE: SPI is simpler | 01/01/70 00:00 | |
| One other quick question for all you smart people. | 01/01/70 00:00 | |
| Some things to consider.... | 01/01/70 00:00 | |
| Full range and clipping | 01/01/70 00:00 | |
| Impedance | 01/01/70 00:00 | |
| You sure? | 01/01/70 00:00 | |
| Impedance With Divider | 01/01/70 00:00 | |
Impedance matching | 01/01/70 00:00 | |
| if I recall | 01/01/70 00:00 |