936
edits
Changes
added 2x logic board partial bill of materials
* For 115V operation, jumper Primary #1A to Primary #2A as well as Primary #1B to Primary #2B. This puts the primaries in parallel.
* For 115V operation, jumper Primary #1A to Primary #2A as well as Primary #1B to Primary #2B. This puts the primaries in parallel.
* For 230V operation, jumper Primary #1B to Primary #2A. This puts the primaries in series.
* For 230V operation, jumper Primary #1B to Primary #2A. This puts the primaries in series.
=== 2x Logic Board ===
{| class="wikitable"
! Name
! Markings
|-
| U1
| [https://www.allegromicro.com/~/media/Files/Datasheets/UCN5818-Datasheet.ashx Allegro UCN5818EPF]
|-
| U2
| [https://www.mouser.com/ds/2/149/74VHC138-104558.pdf Fairchild 74VHC138]
|-
| U3
| [https://en.wikichip.org/wiki/amd/am186ex/am186es%E2%80%9320kc%5Cw AMD Am188 EM-20KC]
|-
| U4
| [http://ww1.microchip.com/downloads/en/DeviceDoc/20067K.pdf Microchip 93AA66/SN]
|-
| U5
| [https://pdf1.alldatasheet.com/datasheet-pdf/view/50688/FAIRCHILD/74VHCT573/+_0589UwYhRDpKxHeDCdPL+hIh+/datasheet.pdf Fairchild 74VHCT573]
|-
| U6
| [https://media.digikey.com/pdf/Data%20Sheets/ISSI%20PDFs/IS62C256.pdf ISSI IS62C256-70U]
|-
| U7
| [http://pdf.datasheetcatalog.com/datasheet/nationalsemiconductor/DS011505.PDF National Semiconductor 74VHCT74]
|-
| U8
| AMI 9851NTF ACU-RITE 387577-702 REV-B
|-
| U9, U10
| [https://pdf1.alldatasheet.com/datasheet-pdf/view/12306/MOTOROLA/MC74VHC574DT/+02_QJUILSxSPME+SpEw+RMhIHSi+/datasheet.pdf Motorola VHC574]
|-
| U11
| unknown, sticker reads "DRO 1.1.2" (ROM?)
|-
| U12
| [http://www.mouser.com/ds/2/149/74VHC123A-15491.pdf Fairchild 74VHC123A]
|}
=== VFDs ===
=== VFDs ===