# Ultrasonic transmitter

Discussion in 'Datasheets, Manuals and Component Identification' started by Nabla1, Feb 20, 2012.

1. ### Nabla1

9
0
Feb 20, 2012
Hi, I want to use this transmitter as part of a project:

http://www.ehag.ch/PDF-Files/MSI/40khz_transmitter.pdf

In the specifications I don't understand what is Vp for the voltage. I assume it is mV, but it doen't say.

I want to know how much output I will get for a given input voltage.

Once I know how much power a certain voltage gives, I can calculate range using calculations for attenuation etc.

Could someone help me out?

All specs are on the 1st page

Thanks.

2. ### (*steve*)¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥdModerator

25,449
2,809
Jan 21, 2010
I would assume volts

3. ### duke37

5,364
769
Jan 9, 2011
Looking at the data sheet and the drive circuit, I think that Vp is the peak voltage (in volts) to be applied to the transducer. The specification gives output for a given input.

4. ### Nabla1

9
0
Feb 20, 2012
Oh ok, so it is Volts not Millivolts?

So 300V max for burst drive, and 150V max for continuous, I would put across the input to the transducer?

5. ### (*steve*)¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥdModerator

25,449
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Jan 21, 2010
Yep, sounds right.

Not sure if it's RMS, peak, peak to peak, or something different.

6. ### Nabla1

9
0
Feb 20, 2012
Thanks, peak voltage then I guess, otherwise the subscript would be pp or rms.

7. ### (*steve*)¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥdModerator

25,449
2,809
Jan 21, 2010
I'd agree with that.