It looks like a feedthrough capacitor. Do you see almost no resistance between the centre pins and an open circuit to the rest?
Feedthrough capacitors can be used to get (DC) signals and supplies into or out of a shielded enclosure without spoiling the shielding much. You drill a hole in the shield, mount the capacitor in it, connect one centre pin to the inside circuitry and the other to the outside stuff. You then have a connection that is well decoupled to the shield.
Feedthrough capacitors can be used to get (DC) signals and supplies into or out of a shielded enclosure without spoiling the shielding much. You drill a hole in the shield, mount the capacitor in it, connect one centre pin to the inside circuitry and the other to the outside stuff. You then have a connection that is well decoupled to the shield.
In satellite electronics, the circuit housings are made from solid aluminum, later the Indians shifted to sheet metal. I see a lot of these devices in those circuits.
Those feed through capacitors are used a lot in shielding between stages and in / out connections in HF / VHF / UHF / microwave band circuits, the alternate may have been nuts instead of tapping.
Like the old AM radios, there are different frequency stages in the circuits, these are a sort of isolation device, to prevent radiation leakage bewteen stages.
More information must be there on the net.
Capacitance is typically in pF, and there may be a marking of some sort about that as well.
Those feed through capacitors are used a lot in shielding between stages and in / out connections in HF / VHF / UHF / microwave band circuits, the alternate may have been nuts instead of tapping.
Like the old AM radios, there are different frequency stages in the circuits, these are a sort of isolation device, to prevent radiation leakage bewteen stages.
More information must be there on the net.
Capacitance is typically in pF, and there may be a marking of some sort about that as well.
Those may be military surplus, posiibly intended for use in missiles (guiding systems) or military radios.
