A187A14C microphone transformers from OEP are ideal for signal splitting and impedance matching. They are encapsulated in a mumetal can and constructed with multiple electrostatic screens. These audio transformers provide dual primary impedance for matching 150 Ω to 15 kΩ.
750 mH primary inductance at 1 kHz, 0.1v 44 pF interwinding capacitance at 20 kHz (primary 1 to screens) 64 pF interwinding capacitance at 20 kHz (primary 2 to screens) 109 pF interwinding capacitance at 20khz (secondary to screens) 12 pF interwinding capacitance at 20 kHz (primaries to secondary when primaries are in series)
