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"carbon microphone"

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Abstract: TELECOMMUNICATIONS CIRCUITS MICROPHONE AMPLIFIER FOR TELEPHONE CIRCUITS ZN470E ZN470E A microphone amplifier developed in conjunction with British Telecom for use with an electret transducer, to replace the carbon transmitter. The amplifier contains a bridge to allow dual polarity operation. The high input impedance makes it suitable for use with high or low impedance microphones providing the microphone gives a high output voltage. The ZN470 ZN470 is available in a 14 lead, high dissipation moulded D.I.L. (E14). ... OCR Scan
datasheet

1 pages,
20.9 Kb

Microphone amplifier electret microphone microphone microphone amplifier bias ZN470E electret a microphone amplifier TRANSDUCERS ELECTRET zn470 carbon microphone ZN470 TEXT
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Abstract: the amplifier speech to the line. DESCRIPTION The LS188 LS188 is a monolithic microphone amplifier designed to be used with several kinds of transducers. It can replace the carbon microphone in telephones and , SGS-THOMSON LS188 LS188 MICROPHONE AMPLIFIER VERY FEW EXTERNAL COMPONENTS BUILT IN PARTIAL BRIDGE HIGH , VM Microphone Voltage (3ms duration) 20 V IM Microphone Current 150 mA Ptot Power Dissipation 600 mW , 60 mA lrei =15 mA ± 1 dB Vi -7 Microphone Voltage IM = 7 mA Im « 15 mA IM = 40 mA 4.5 5.9 8.65 V ... OCR Scan
datasheet

3 pages,
56.77 Kb

"carbon microphone" carbon microphone LS188 TEXT
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Abstract: microphone amplifier designed to be used with several kinds of transducers. It can replace the carbon microphone in telephones and may also be used in cassette recorder, walky talkies, or infrared receiver ,  SGS-THOMSON M LS188 LS188 MICROPHONE AMPLIFIER VERY FEW EXTERNAL COMPONENTS BUILT IN PARTIAL , CIRCUIT 420 il ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VM Microphone Voltage (3ms duration) 20 V IM Microphone Current 150 mA Ptot Power Dissipation 600 mW T0p Operating Temperature - 30 ... OCR Scan
datasheet

3 pages,
101.37 Kb

microphone WITH 2 mv input LS188 LS188CB "carbon microphone" carbon microphone TEXT
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Abstract: Microphone Mixer Evaluation Module DATA MANUAL: SLOU009 SLOU009 Date: July 1997 IMPORTANT NOTICE , a microphone interface to the P-n-P Audio Power Amplifier Evaluation Platform. With the Mic/Mixer , - Pot, 50 k, Slide, Audio Taper R3,5,8,12,14 - Resistor, 10 k Carbon R16,17,18,19 - Resistor, 10 k Carbon R20,21,25 - Resistor, 10 k Carbon R4,6,13,15 - Resistor, 20 k Carbon R22,23,24 - Resistor, 20 k Carbon R9 - Resistor, 47 k Carbon R7 - Resistor, 2.2 k Carbon R10 - Pot, 200 k, 3/4 turn JP1,2 -0.1" ... Texas Instruments
Original
datasheet

13 pages,
88.29 Kb

50k slide stereo Potentiometer mic bias circuit slide potentiometer 20k C3216Y5V1C105Z 47 k pot Potentiometer 10k slide PCC104BCTND 200k ohm pot Y5V 1206 capacitor electret mic RESISTOR CF SLOP107 SLOU009 TLC2274CD SLOU009 PCC104bct-nd SLOU009 47k ohm carbon resistor SLOU009 audio input mic mixer SLOU009 TLC2274 SLOU009 1206 capacitor SLOU009 stereo slide pot SLOU009 microphone mixer schematic SLOU009 SLOU009 SLOU009 TEXT
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Abstract: Classic UP SPOFC microphone cable Van Damme Classic microphone cable combines flexibility, durability, noiseless operation and signal transparency without compromise. The range now features an , is less environmentally damaging than other insulation materials as it releases carbon dioxide and , noise free operation. The overall jacket of Van Damme microphone cable is extruded using an improved , · Microphone and line level analogue balanced audio use · Ideal for on stage use · 10 colours ... Original
datasheet

2 pages,
47.69 Kb

TEXT
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Abstract: microphone amplifier designed to be used with several kinds of transducers. It can replace the carbon microphone in telephones and may also be used in cassette recorder, walky talkies, or infrared receiver , SGS-THOMSON LS188 LS188 MICROPHONE AMPLIFIER VERY FEW EXTERNAL COMPONENTS BUILT IN PARTIAL BRIDGE , VM Microphone Voltage (3ms duration) 20 V IM Microphone Current 150 mA Ptot Power Dissipation 600 , Spread vs. Line Current Vmi = 1 mV f = 1 KHz lM = 7 to 60 mA lrei =15 mA ± 1 dB Vi -7 Microphone ... OCR Scan
datasheet

3 pages,
57.42 Kb

lm 471 LS188 "carbon microphone" carbon microphone TEXT
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Abstract: microphone amplifiers are designed to be used with several kinds of transducers. They can replace the carbon microphone in telephones and may also be used In cassette recorder, walky talkies, or infrared receiver ,  LS188 LS188 MICROPHONE AMPLIFIER • VERY FEW EXTERNAL COMPONENTS NEEDED • BUILT IN PARTIAL , Microphone voltage (3ms duration) 20 V Microphone current 150 mA Ptot Power dissipation 600 mW Top , 60mA I ref = 15mA ± 1 dB Vj_7 Microphone voltage 1m= 7mA 1 m = 1 5mA lM = 40mA 4.5 5.9 8.65 V V V ... OCR Scan
datasheet

3 pages,
54.24 Kb

LS188 a microphone amplifier LS188CB LS188B "carbon microphone" carbon microphone TEXT
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Abstract: Signetics Integrated Circuits - General TCA980 TCA980 - Microphone Amplifier GENERAL DESCRIPTION The TCA980 TCA980 is a monolithic integrated microphone amplifier, it is primarily intended for use with low impedance microphones in telephone systems. The output of the amplifier is 22 mV/fibar when used with a microphone having an impedance of 200 il and a sensitivity of 100 mWjibar. A capsule assembly containing the TCA980 TCA980, a low-impedance microphone and a 0,22 nE capacitor can directly replace a carbon microphone. The ... OCR Scan
datasheet

7 pages,
199.53 Kb

"carbon microphone" TCA980 carbon microphone TEXT
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Abstract: either polarity supply and closely simulates the DC characteristics of a carbon microphone. When used , of current status. SL793 SL793 CAPACITANCE MICROPHONE AMPLIFIER (ELECTRET) The amplifier is intended for use with any microphone requiring a high input impedance and having a capacitance of 33pF or , microphone replacement for transmitter replacement No.16. OPERATING NOTES 1. The amplifier will operate , microphone is used. 3. The external 15ohm resistor is required to meet PO specification and is not ... OCR Scan
datasheet

3 pages,
59.78 Kb

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Abstract: closely simulates the D C characteristics of a carbon microphone. When used with an appropriate transducer the device conforms to B PO specifications S1377 S1377 (July 1978): 'A linear microphone replacement , MICROPHONE AMPLIFIER (PVDF) The amplifier is intended for use with any microphone requiring a high input , polarity supply. 2. A series capacitor of at least 330pF is required if a low impedance microphone is ... OCR Scan
datasheet

3 pages,
56.37 Kb

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