Description
OEP’s Microphone Input Transformer A187A15C – Perfect for low-noise FET or vacuum tube amplifiers, this transformer features a mu-metal shielding can that delivers a substantial 30dBs of magnetic shielding. Additionally, it boasts multiple electrostatic screens and a fully balanced primary winding for optimal performance.
Features:
- Low noise FET or vacuum tube input amplifiers
- Over 19dB of voltage gain
- Balanced primary windings
- Multiple electrostatic screens
- Encapsulated in a mu-metal screening can that provides up to 30dB of magnetic shielding
CLICK HERE for the Product DATA SHEET
Electrical characteristics
- Turns ratio: 1 C.T. to 10
- Impedance ratio: 150Ω to 15k
- DC resistance (Ω +/- 15%)
- Primary (8 – 5) : 20.2Ω
- Secondary (1 – 4): 1.59kΩ
- Primary inductance: see page 2
- Leakage inductance (@ 1kHz, 0.1V, pins 5, 6, 8 S/C): 17mH (typical)
- Interwinding capacitance (@ 10kHz, 0.1V):
- winding to winding 130pF
- with screen earthed, winding to winding 17pF
- Primary to screen: 254pF
- Secondary to screen: 260pF
- Maximum input at 20Hz (8-5) < 1% THD: -5dBu
- Voltage gain @ 1kHz, 150Ω, -20dBu: 19.65dB (150k load)
- Transformer shielded with mu-metal can.
- N.B. Do not pass DC through windings.
OEP’s microphone input 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.
