I am a novice electronics tech and have encountered a symbol I cannot identify on a schematic for an audio mixer.
It's an upside down triangle with a squiggly line similar to a reversed S sideways?..
Any ideas?
The triangle is an earth or ground. The fact that it has the alternating symbol added makes me think it is the gnd of the AC side of a power supply or other circuit which has a separate DC side gnd.
It appears to be a non-standard earth ground symbol, possibly the grounded neutral, and used due to the general prevalent misuse of the earth ground symbol for circuit common.
Max.
In an audio mixer, probably an analog ground, as opposed to a digital ground. For noise control, ground currents from the analog amplifiers is kept separate from the ground current for the digital control logic circuits.