Readme.md

module	author
alt.tbo	kelu124

Module: alt.Tbo

Name

MDL-alt.tbo_hvpulser

Title

alt.tbo: the bipolar HV-pulser

Description

• The second iteration of the HV-Pulser of the echOmods
• Setup? Soon a quickstart?
• version: V0.3
• cost:120$
• sourcing:Tindie
• date: 24/09/2017
• technology: Module-compatible, Homemade PCB, ICs based on TC6320TG and NMT0572SC
• language: Altium
• author: Kelu124

IOs

Inputs

• ITF-1_GND
• ITF-2_VDD_5V
• ITF-9_Pon
• ITF-10_Poff
• ITF-19_3.3V
• ITF-mET_Transducer : signal coming back

Outputs

• ITF-18_Raw : for the signal coming from the transducer
• ITF-mET_SMA : for the signal coming out to the signal processing (if through SMA)
• ITF-mET_Transducer : for the signal coming out of the pulser (if through SMA)

Key Components

• TC6320TG
• NMT0572SC

Information

What is it supposed to do?

The aim of this echOmod is to get the HV Pulse done.

How does it work: block diagram

• Pulse-P->TC6320TG
• Pulse-N->TC6320TG
• Damper->TC6320TG
• NMT0572SC->HV-N->TC6320TG
• NMT0572SC->HV-P->TC6320TG->ITF-mET_Transducer
• ITF-mET_Transducer->ITF-mET_SMA
• ITF-mET_Transducer->ITF-18_Raw

About the module

Pros

• Cheaper, more robust than tobo
• Less issues with the MD0100

Cons

• As of today (20180305), the damper still lacks

Constraint and limits

Testing

• First experiment jupyter notebook and first datasets
• Driver for raspberry pi
• More tests with fixed depth experiment (for pulse quality tests).

Images

Alone

Testing with a fixed depth of water

Tests with 3 levels of HV (25, 50 and 75V) - unipolar

Details of pulses at 50V

Brief

Specs

• Needed to get 200ns wide square pulses, both in the positive and negative.
• Control of pulses must be through 3.3 or 5V tolerant logic
• Pulses height must be selectable (say with a jumper?) for ~20V, 40V, 80V (for positive pulses) and -20, -40V, and -80V for negative.
• Only power supply available is 5V

Components

• See this application note - recommend MD1213 and TC6320
• Possible (but not used in the end) high voltage source: https://datasheets.maximintegrated.com/en/ds/MAX5025-MAX5028.pdf (3 -> 30V) to be used with a 555 DC-DC convertor
• Signal back from the diod is clipped by MD0100 + back to back diods.

Power use

To be powered at 5V only.

Components

• HV: NMT0572SC
• Pulser : MD1213 and TC6320 -> see Fig.6 here, bipolar 3 level pulser.
  • TC6320, undamped, detailed here.
  • TC6320 http://ww1.microchip.com/downloads/en/DeviceDoc/20005697A.pdf for the datasheet
• Protection: MD0100+diods -- should be enough, see bottom of page 1, or Fig 9

Discussions

TODO

• Check a design w/ this idea which is similar to this other idea or this last idea.
• IMPORTANT - do these corrections for a bipulser.
• A new unipulser design is on the way

DONE

• Preliminary tests

People

• Sofian (for preparing the field with Murgen)
• Ivan for the TC6320TG

License

echOmods

The echOmods project and its prototypes (amongst which we find the alt.tbo module) are open hardware, and working with open-hardware components.

Licensed under TAPR Open Hardware License (www.tapr.org/OHL)

Copyright Kelu124 ([email protected]) 2015-2018

Based on

The following work is base on a previous TAPR project, Murgen - and respects its TAPR license.

Copyright Kelu124 ([email protected]) 2015-2018