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I am hoping to find help on how to properly connect supply voltage to my switch assembly in order to actuate. My switch has input requirement of +15, -15, GND, and +5V. Also, the 5v logic inputs. High ON, low OFF.

Can +15, -15, GND come from the same supply. My bench model has 3 terminal. Can the +5V and TTL use the same supply? Since I need multiple supplies do they share same GND reference?

schematic

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    \$\begingroup\$ A warm welcome to the site. Please edit your question and add a schematic. Otherwise, you're asking people to draw this in their heads. Please don't post a giant photo of a sketch. The schematic editor here is easy to use. The better the quality of your question, the better the quality of the answers you will attract. Thanks. \$\endgroup\$
    – TonyM
    Commented Nov 24, 2020 at 19:43
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    \$\begingroup\$ Which switch assembly? Generally, +5V = TTL, and all of the grounds are shared. But without knowing exactly what the switch assembly is, this could be wrong. \$\endgroup\$
    – rdtsc
    Commented Nov 24, 2020 at 19:55
  • \$\begingroup\$ My application is a custom assembly that has multiple switches inside one module. I provide assembly service and wish to verify functionality with a continuity check. I will try the schematic editor per TonyM's suggestion. \$\endgroup\$
    – Kat_2112
    Commented Nov 24, 2020 at 20:19
  • \$\begingroup\$ Hi! I could not find the editor here, but instead used an online tool. tinyurl.com/yyhvlczk. I was not sure if 3 supplies were needed. The TTL input is indeed +5V \$\endgroup\$
    – Kat_2112
    Commented Nov 24, 2020 at 21:09

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