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
- https://www.hammfg.com/part/1455T1601BK
Not finding many off-the-shelf box options.