Ramsey Electronics PPM3 Telephone User Manual


 
PPM3 Page 13
2 SSM2165-1S surface mount microphone amplifier ICs (U1,U3)
Miscellaneous Components
3 DPDT switches (S1,S2,S3)
1 1/4” stereo jack (J7)
1 Dual RJ11 jack (J1)
1 2.1mm power jack (J4)
2 Dual RCA jacks (J2,J3)
1 Isolation transformer [large yellow part with 6 leads] (T1)
1 Piece of heat shrink tubing