Transformer - Hammond, Microphone Input Transformers
Studio Grade Impedance Matching, 1140 Series.
Features
- Designed with Nickel alloy cores for high performance and Wide Bandwidth
- Frequency Response: 20 Hz – 20 kHz ±0.35 dB, (ref. @ 1 kHz)
- Low distortion at levels up to +27 dBu @ 20 Hz.
- Excellent Shielding – Mu Metal enclosures
Part No. | Impedance Ratio | Turns Ratio | Max Input @ 20Hz | THD @ 20Hz | Frequency Response 20Hz / 20kHz |
---|---|---|---|---|---|
1140-MN-A | 150:15K | 1:10 | -2.5 dBu | 0.02% | -0.05 dB/ -0.06 dB |
1140-MN-B | 150: 3.8K | 1:5 | +7.0dBu | 0.015% | -0.04 dB/ +0.00 dB |
RoHS Compliant
Product Option | Our Part Number | UPC/EAN | Hammond Part Number |
---|---|---|---|
1140-MN-A | P-T1140-MN-A | 623980930206 | 1140-MN-A |
1140-MN-B | P-T1140-MN-B | 623980930213 | 1140-MN-B |
Capacitance, primary to shield and case | 1140-MN-A version | P-T1140-MN-A | 350 pF |
1140-MN-B version | P-T1140-MN-B | 780 pF | |
Capacitance, secondary to shield and case | 1140-MN-A version | P-T1140-MN-A | 375 pF |
1140-MN-B version | P-T1140-MN-B | 450 pF | |
Common Mode Rejection Level @ 3 kHz | 75 dB | ||
Common Mode Rejection Level @ 60 Hz | 90 dB | ||
DCR Primary | 1140-MN-A version | P-T1140-MN-A | 24 Ω |
1140-MN-B version | P-T1140-MN-B | 17.25 Ω | |
DCR Secondary | 1140-MN-A version | P-T1140-MN-A | 2.4 kΩ |
1140-MN-B version | P-T1140-MN-B | 450 Ω | |
Dielectric Strength | 500 Vrms | ||
Frequency Response @ 20 Hz | 1140-MN-A version | P-T1140-MN-A | -0.06 dB |
1140-MN-B version | P-T1140-MN-B | -0.04 dB | |
Frequency Resposne @ 20 kHz | 1140-MN-A version | P-T1140-MN-A | 0.0 dB |
1140-MN-B version | P-T1140-MN-B | 0.01 dB | |
Input Impedance | 150 Ω | ||
Item Diameter | 1140-MN-A version | P-T1140-MN-A | 1.25 in. |
1140-MN-B version | P-T1140-MN-B | 1.375 in. | |
Item Height | 1140-MN-A version | P-T1140-MN-A | 1.069 in. |
1140-MN-B version | P-T1140-MN-B | 1.724 in. | |
Item Width | 2.25 in. | ||
Maximum input Level @ 20Hz | 1140-MN-A version | P-T1140-MN-A | -2.5db |
1140-MN-B version | P-T1140-MN-B | +7.0db | |
Mounting Hole Center to Center | 1.875 in. | ||
Mounting Hole Length | 0.3125 | ||
Mounting Hole Width | 0.2 in. | ||
Mounting Tab Width | 0.4 in. | ||
Output Impedance | 1140-MN-A version | P-T1140-MN-A | 15 kΩ |
1140-MN-B version | P-T1140-MN-B | 3.8 kΩ | |
Phase Shift @ 20 Hz | 1140-MN-A version | P-T1140-MN-A | 1.75⁰ |
1140-MN-B version | P-T1140-MN-B | 0.6⁰ | |
Phase Shift @ 20 kHz | 1140-MN-A version | P-T1140-MN-A | -5.0⁰ |
1140-MN-B version | P-T1140-MN-B | 6.0⁰ | |
Primary Input Impedance | 1140-MN-A version | P-T1140-MN-A | 1.3 kΩ |
1140-MN-B version | P-T1140-MN-B | 1.7 kΩ | |
Secondary Output Impedance | 1140-MN-A version | P-T1140-MN-A | 12.5 Ω |
1140-MN-B version | P-T1140-MN-B | 4.6 kΩ | |
THD | 1140-MN-A version | P-T1140-MN-A | 0.004% |
1140-MN-B version | P-T1140-MN-B | 0.015% | |
Turns ratio | 1140-MN-A version | P-T1140-MN-A | 1 to 10 |
1140-MN-B version | P-T1140-MN-B | 1 to 5 |
Packaging Dimensions | 1140-MN-A version | P-T1140-MN-A | 2.25 in. × 1.25 in. × 1.069 in. |
1140-MN-B version | P-T1140-MN-B | 2.25 in. × 1.375 in. × 1.724 in. | |
Weight (Packaging) | 0.3 lbs. |
P-T1140-MN-A - 1140-MN-A version | Capacitance, primary to shield and case | 350 pF |
Capacitance, secondary to shield and case | 375 pF | |
Common Mode Rejection Level @ 3 kHz | 75 dB | |
Common Mode Rejection Level @ 60 Hz | 90 dB | |
DCR Primary | 24 Ω | |
DCR Secondary | 2.4 kΩ | |
Dielectric Strength | 500 Vrms | |
Frequency Response @ 20 Hz | -0.06 dB | |
Frequency Resposne @ 20 kHz | 0.0 dB | |
Input Impedance | 150 Ω | |
Item Diameter | 1.25 in. | |
Item Height | 1.069 in. | |
Item Width | 2.25 in. | |
Maximum input Level @ 20Hz | -2.5db | |
Mounting Hole Center to Center | 1.875 in. | |
Mounting Hole Length | 0.3125 | |
Mounting Hole Width | 0.2 in. | |
Mounting Tab Width | 0.4 in. | |
Output Impedance | 15 kΩ | |
Phase Shift @ 20 Hz | 1.75⁰ | |
Phase Shift @ 20 kHz | -5.0⁰ | |
Primary Input Impedance | 1.3 kΩ | |
Secondary Output Impedance | 12.5 Ω | |
THD | 0.004% | |
Turns ratio | 1 to 10 | |
P-T1140-MN-B - 1140-MN-B version | Capacitance, primary to shield and case | 780 pF |
Capacitance, secondary to shield and case | 450 pF | |
Common Mode Rejection Level @ 3 kHz | 75 dB | |
Common Mode Rejection Level @ 60 Hz | 90 dB | |
DCR Primary | 17.25 Ω | |
DCR Secondary | 450 Ω | |
Dielectric Strength | 500 Vrms | |
Frequency Response @ 20 Hz | -0.04 dB | |
Frequency Resposne @ 20 kHz | 0.01 dB | |
Input Impedance | 150 Ω | |
Item Diameter | 1.375 in. | |
Item Height | 1.724 in. | |
Item Width | 2.25 in. | |
Maximum input Level @ 20Hz | +7.0db | |
Mounting Hole Center to Center | 1.875 in. | |
Mounting Hole Length | 0.3125 | |
Mounting Hole Width | 0.2 in. | |
Mounting Tab Width | 0.4 in. | |
Output Impedance | 3.8 kΩ | |
Phase Shift @ 20 Hz | 0.6⁰ | |
Phase Shift @ 20 kHz | 6.0⁰ | |
Primary Input Impedance | 1.7 kΩ | |
Secondary Output Impedance | 4.6 kΩ | |
THD | 0.015% | |
Turns ratio | 1 to 5 |
Specification Sheet for 1140-MN-A | P-T1140-MN-A |
Specification Sheet for 1140-MN-B | P-T1140-MN-B |
My Project Lists
Specifications, Files, and Documents
Questions? Contact us at [email protected], or give us a call at 480-755-4712