Repairing a faulty power supply. What does this symbol mean?

[Mikaelea]

Hello,

I'm repairing a faulty power supply in an Eden bass preamp. The people att Eden was kind enough to provide me with the schematics but there is one symbol I don't know. Maybe you guys can help me?

[Mikaelea]

[Rob Strand]

It's a bit weird.  I'd guess it was a 3-pin connector that went to a Fan.

[antonis]

Α 12V / 130mA fan, perhaps..??
(judging from R51 value..)

Though, that CT brings in mind some transformer secondary but I can't see the reason for DC powering such a device..

[bluebunny]

Looks like the heater(s) of a 12AX7 (or similar).  Is there a tube in this preamp?

Edit: I guess there must be a tube, given the +125V supply at the bottom.

[duck_arse]

Looks like the heater(s) of a 12AX7 (or similar).  Is there a tube in this preamp?

Edit: I guess there must be a tube, given the +125V supply at the bottom.

this would be bluebunny winning the interwebs for the week. probably no bandwidth to spare, but still.


A heater and B heater? V1C as in V1A and V1B for the two triodes?

[Rob Strand]

Looks like the heater(s) of a 12AX7 (or similar).  Is there a tube in this preamp?

The heater makes sense and series heaters matches the weird symbol (both the ct and the H in AH and BH).