SR504A is a microphone transformer 200 ohm : 2k 1 2 3 4 SR504 5 6 7 8 SR504 /SR504A PCB Flying leads in+ 2 red in- 3 yellow out+ 6 green out- 7 grey core 1 housing 4 Faraday shield 5+8 black SR504a is similar to the more modern transformer LL1538
SR504A is a microphone transformer 200 ohm : 2k 1 2 3 4 SR504 5 6 7 8 SR504 /SR504A PCB Flying leads in+ 2 red in- 3 yellow out+ 6 green out- 7 grey core 1 housing 4 Faraday shield 5+8 black SR504a is similar to the more modern transformer LL1538