Description

Microphone Input Transformer VTX-MIC5

1 CT : 5+5 150(Ω) 0dBu MIC INPUT TRANSFORMER PCB mounting

Microphone Input Transformer VTXMIC5 – designed specifically for impedance matching with the pre-amplifier stage

• for mic pre-amp input circuits to match microphones to pre-amp
• in tube microphones for matching high impedance tube circuits to normal output impedance
• in 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 VTXMIC5

• Microphone input transformer
  Input impedance: 150Ω
  Input 0dBu max. (@ 20Hz) <1%THD
  Frequency response 1 to 5: +/-0.2dB (20Hz – 35kHz)
  Hi-pot, primary to secondaries: 500VDC
  Windings to screens+can: 500VDC
• Fitted with multiple electrostatic screens
  Low distortion Mu-metal core
  Mu-metal screening can reduces electrical noise by up to 30dB
  Operating temperature range: 0 to +70 C
  Storage temperature range: -25 C to +120 C
  Mass = 0.055kg

Electrical characteristics

Specification (test circuit 1):
Turns ratio: 1 to 10 (series)
DC resistance (Ω+/-15%)
Primary (8 – 5): 19
Secondary (1 – 4): 2040
Input impedance (Ω): 1.35kΩ (typ.) @ 1kHz
Output impedance (Ω): 19.4kΩ (typ.) @ 1kHz
Voltage gain @ 1kHz, 19.07dBu (typ.)
Maximum input @ 20Hz, <1% THD: 0dBu
Insertion loss: 0.2dB (typ.)
Leakage inductance @ 1kHz: (8 – 5) (1/2/3/4 S/C) 90mH (typ.)
Capacitance @ 10kHz, 0.1V:
Cp-s: 68pF (typ.) or 8pF (typ.) with screen earthed
Cp-scr: 140pF (typ.)
Cs-scr: 120pF (typ.)

Specification (test circuit 2):
Turns ratio: 1 to 5 (parallel wired)
DC resistance (Ω+/-15%)
Primary (8 – 5): 19
Secondary (parallel) ((1+2) – (3+4)): 507
Input impedance (Ω): 1.5kΩ (typ.) @ 1kHz
Output impedance (Ω): 4.8kΩ (typ.) @ 1kHz
Voltage gain @ 1kHz, 12.94dBu (typ.)
Maximum input @ 20Hz, <1% THD: 0dBu
Insertion loss: 0.2dB (typ.)
Leakage inductance @ 1kHz: (8 – 5) (1/2/3/4 S/C) 58mH (typ.)
Capacitance @ 10kHz, 0.1V:
Cp-s: 68pF (typ.) or 8pF (typ.) with screen earthed
Cp-scr: 140pF (typ.)
Cs-scr: 120pF (typ.)