Understanding a waveform
SailerMan
Posts: 337
I have two sonar sensors' pulse output wired into the same pin on an SX48. I range them seperately and never at the same time.. I isolated the pulse output pins of the sensors with· 1n914 diodes (It's what I had), While looking at the waveform from the sensor, it's a really nice squarewave, if I look at the waveform after the Diode the trailing edge slopes.. I assume it has something to do with the recovery time of the Diode and it's internal capacitance. What is a better diode to use than a 1n914 to square off my waveform again. Or is this not really a problem.
Regards,
Eric
·
Regards,
Eric
·
Comments
I doubt changing the diode would help. You probably need a pull-down resistor after the diode. Something like 1K should give a nice clean falling edge.
Bean.
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
"Educate your children to self-control, to the habit of holding passion and prejudice and evil tendencies subject to an upright and reasoning will, and you have done much to abolish misery from their future and crimes from society"
Benjamin Franklin
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
www.hittconsulting.com
·