Up:  [[ElbatTOF2017]]

This is a power supply for the electron gun filament.  

* Photos: http://ohm.bu.edu/~hazen/elbat_tof/Photos/2018-09-13/fil/
* SVN: http://gauss.bu.edu/svn/tof-system/Hardware/filament/

This will be implemented as a new PCB following closely the
original design, and mounted in an appropriate enclosure.

A 120/240V jumper will need to be provided for the AC input.

The ammeter should be a digital panel meter.  With the 0.1 ohm
current sense resistor, the output would be 0.1V/A so a 3-1/2 digit
meter with the decimal point set appropriately would be fine.

=== Enclosure

The 2N3773 transistor (TO-204) needs a very big heatsink and should be mounted
outside the case as in the original.

PCB is 6 x 6 in.  Transformer sits about 1.6 in high on PCB.

* Box search (mouser): https://mou.sr/2t6e57d
 * https://www.hammfg.com/part/1455T1601BK
  * Maybe not high enough

Not finding many off-the-shelf box options.