Description
Microphone Input Transformer VTX-MIC4
1 CT : 4+4 150(Ω) 0dBu MIC INPUT TRANSFORMER PCB mounting
Microphone Input Transformer VTXMIC4 – designed specifically for impedance matching with the pre-amplifier stage
- for mic pre-amp input circuits to match microphones to pre-amp
- for tube microphones for matching high impedance tube circuits to normal output impedance
- for ribbon microphones to transform very low voltage, very low impedance ribbon motors to normal microphone output levels
Transformer Data Sheet – Click to open and DOWNLOAD
Microphone Input Transformer VTXMIC4
- Microphone input transformer
Input 0dBu max. (@20Hz) <1%THD - Fitted with multiple electrostatic screens
Low distortion Mu-metal core - Mu-metal screening can reduces electrical noise
by up to 30dB - Hi-pot, primary to secondaries: 500VDC
Windings to screens+can: 500VDC - Operating temperature range: 0 to +70 C
Storage temperature range: -25 C to +120 C
Mass = 0.055kg
Electrical characteristics
Specification
Turns ratio: 1 C.T. to 4 (parallel) or 8 C.T. (series)
Optimum source impedance:150Ω
DC resistance (Ω+/-15%)
Primary: 18.5
Secondary: 1500
Input impedance (Ω): 1.32k (typ.) @ 1kHz (100k load)
Output impedance (Ω): 12.5kΩ (typ.) @ 1kHz (150Ω load)
Voltage gain (1 to 8) @ 1kHz, 0dBu: 17.7dBu (typ.)
Maximum input @ 20Hz, 150Ω, <1% THD: 0dBu
Insertion loss (1 to 8): 2.2dB (typ.)
Leakage inductance @ 1kHz: (8 – 5) (1/2/3/4 S/C) 0.8mH (typ.)
(1 – 4, 2+3 linked) (5/6/7/8 S/C): 51mH (typ.)
Capacitance @ 10kHz, 0.1V:
Cp-s: 75pF (typ.) or 5pF (typ.) with screen earthed
Cp-scr: 140pF (typ.)
Cs-scr: 155pF (typ.)
