Description
Microphone Input Transformer VTX-MIC14
1 CT : 4+4 150Ω 8dBu
Microphone Input Transformer VTXMIC14 – designed specifically for impedance matching with the input stage. I.E. interfaces microphone with the input stage of mixing consoles, pre-amps, and recording devices
- 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 VTXMIC14 Applications:
- High performance microphone input transformer
Input +8dBu 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
- Mass = 0.11kg
Tolerance on can dimensions: +/- 0.5mm
Electrical characteristics
Specification (test circuit 1):
Turns ratio: 1 C.T. to 4
Optimum source impedance:150W
DC resistance (W+/-15%)
Primary: 23
Secondary: 433
Input impedance (W): 1.57k (typ.) @ 1kHz
Output impedance (W): 3.23k (typ.) @ 1kHz (150W load)
Voltage gain @ 1kHz, 0dBu: 11.06dBu (typ.)
Maximum input @ 20Hz, 150W, <1% THD: +8dBu
Insertion loss: 0.2dB (typ.)
Leakage inductance (6/7 – 9/10) @ 1kHz: 9.9mH (typ.)
Capacitance @ 10kHz, 0.1V:
Cp-s: 110pF (typ.) or 5pF (typ.) with screen earthed
Cp-scr: 250pF (typ.)
Cs-scr: 180pF (typ.)
Specification (test circuit 2)
Turns ratio: 1 C.T. to 8 C.T.
Optimum source impedance:150W
DC resistance (W+/-15%)
Primary: 23
Secondary (1+2): 1745
Input impedance (W): 1.49k (typ.) @ 1kHz
Output impedance (W): 12.9k (typ.) @ 1kHz (150W load)
Voltage gain @ 1kHz, 0dBu: 17.0dBu (typ.)
Maximum input @ 20Hz, 150W, <1% THD: +8dBu
Insertion loss: 0.3dB (typ.)
Leakage inductance (6 – 10) @ 1kHz: 39mH (typ.)
Capacitance @ 10kHz, 0.1V:
Cp-s: 110pF (typ.) or 5pF (typ.) with screen earthed
Cp-scr: 250pF (typ.)
Cs-scr: 180pF (typ.)
