Description
OEP’s A187A18C – Microphone Input Transformer Ideal for medium impedance amplifiers
CLICK HERE for the Product DATA SHEET
A187A18C Electrical characteristics
- Winding ratio: 1:5
- Impedance ratio: 200 Ω to 5k Ω
- Maximum input @ 20Hz (<1% THD): -4dBu
- DC resistance (Ω +/-15%):
- Primary: 13.5
- Secondary: 352
- Leakage inductance @ 1kHz, 0.1V : 12.7mH (typ.) with pins 5+8 S/C)
- Interwinding capacitance @ 10kHz, 0.1V:
- primary to secondary: 5.6pF (typ.) (screens earthed)
- primary to screens: 145pF (typ.)
- secondary to screens: 145pF (typ.)
- Voltage gain @1kHz, -10dBu: 12.88dBu
- Proof voltage: windings to screens: 500Vrms
- primary to secondary: 500Vrms
- Operating temperature range: 0 to +70 C.
- Do not pass DC through windings
Features:
- Over 12dB of voltage gain
- Multiple electrostatic screens
- Encapsulated in a mu-metal screening can that provides up to 30dB of magnetic shielding
OEP’s microphone transformers encompass a variety of specialised audio transformers meticulously designed and manufactured at OEP’s factory facilities in Oxford. The combination of design and manufacturing proficiency enables OEP to exercise precise control over the production process, guaranteeing that each Microphone Input Transformer adheres to the stringent specifications set by its designer. This commitment to build quality directly influences the transformer’s efficiency, resulting in outstanding sound quality and reliability.
- Brand: Oxford Electrical Products (CARNHILL GROUP)
- OEP: founded in 1982
- Made in BRITAIN (Oxford)
Oxford Electrical Products has established itself as a globally trusted brand for the design and manufacture of transformers and power supplies.
