Mesa Electronics THCAD High Isolation Analog-to-Digital Card

Mesa THCAD
THCAD-300 top (no connectors)
THCAD-300 bottom

Overview

THCAD stands for "Torch Height Control Analog to Digital", as the main application of a high isolation analog to digital converter is for CNC plasma cutters with arc voltage feedback for torch height control.

Bill of Materials

Name Marking Part
U1,U2,U10 [Nexperia Logo] 74HC4040D CXT38501 TXD2040D Nexperia 74HC4040D
U3,U5 NXP 74HC04D CKT58301 TXD1610E Nexperia 74HC04D
U4 ISL32174 EIBZ W2001AAAB Renesas ISL32174EIBZ
U6 5241ARZ #2013* 75420 Analog Devices ADUM5241ARZ
U7 MV342I [TI logo] Q7M AP9JG4 Texas Instruments LMV342ID
U8 [Analog Devices logo] V OK [MSOP-8] Analog Devices AD7740KRMZ
U9 L0A Texas Instruments LM3480IM3X-3.3
U11 431BV PEKW onsemi NCV431BVD
U12 272C [TI logo] 8AM AHDL G4 Texas Instruments TLC272CD
CR3,CR4 A7W 9n (or u6?) onsemi SBAV99LT3G
CR1 [Diodes Incorporated logo] 504 1N4002 [DO-41] Diodes Incorporated 1N4002

Online Resources

THCAD Manual

THCAD-300 | Mesa Web Store

THCAD-10 | Mesa Web Store

THCAD-5 | Mesa Web Store

Converting a THCAD-300 to a THCAD-10? - LinuxCNC

Преобразователь напряжения в частоту MESA THCAD-10: купить по лучшей цене от компании "CNCPROM" - 1053478343 (source for stock photo)