Mono preamp Archives - Amplifier Circuit Design

Mono Preamp Based on NE5534

Amplifier Circuit — Mon, 24 Oct 2011 02:56:08 +0000

Mono preamp based on a NE5534 circuit diagram. This preamp is particularly suitable for microphones with an output impedance of 200 ohms to 600 ohms. The advantage of the preamplifier is 50 dB, and bandwidth (-3 dB) extends to about 25 KHz. The splitted power supply is required.

" data-image-caption="" data-large-file="https://i0.wp.com/amplifiercircuit.net/wp-content/uploads/2011/10/Mono-preamp-based-on-a-NE5534.jpg?resize=630%2C380&ssl=1" class="aligncenter size-medium wp-image-693" title="Mono preamp based on a NE5534" src="https://i0.wp.com/amplifiercircuit.net/wp-content/uploads/2011/10/Mono-preamp-based-on-a-NE5534-300x214.jpg?resize=300%2C214" alt="Mono preamp based on a NE5534" width="300" height="214" srcset="https://i0.wp.com/amplifiercircuit.net/wp-content/uploads/2011/10/Mono-preamp-based-on-a-NE5534.jpg?resize=300%2C214&ssl=1 300w, https://i0.wp.com/amplifiercircuit.net/wp-content/uploads/2011/10/Mono-preamp-based-on-a-NE5534.jpg?w=698&ssl=1 698w" sizes="(max-width: 300px) 100vw, 300px" />This achievement shows that it is possible to create a balanced dynamic microphone preamp, it is relatively simple. This preamp is particularly suitable for microphones with an output impedance of 200 ohms to 600 ohms. The advantage of the preamplifier is 50 dB, and bandwidth (-3 dB) extends to about 25 KHz. The splitted power supply is required.

The power supply should be treated. It is recommended to use a symmetrical power supply + /-15V using a voltage regulator has less noise, such as the LM317 and LM337.

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Mono Preamplifier based on TL062

Amplifier Circuit — Tue, 18 Oct 2011 02:42:13 +0000

Mono microphone pre amp circuit diagram. This integrated circuit has two operational amplifier in a housing 8-pin, and has good performance alone, mostly in terms of noise and power consumption. Its use for portable audio applications.

" data-image-caption="" data-large-file="https://i0.wp.com/amplifiercircuit.net/wp-content/uploads/2011/10/mono-microphone-pre-amp.jpg?resize=527%2C318&ssl=1" class="aligncenter size-medium wp-image-679" title="Mono microphone pre amp" src="https://i0.wp.com/amplifiercircuit.net/wp-content/uploads/2011/10/mono-microphone-pre-amp-300x119.jpg?resize=300%2C119" alt="Mono microphone pre amp" width="300" height="119" srcset="https://i0.wp.com/amplifiercircuit.net/wp-content/uploads/2011/10/mono-microphone-pre-amp.jpg?resize=300%2C119&ssl=1 300w, https://i0.wp.com/amplifiercircuit.net/wp-content/uploads/2011/10/mono-microphone-pre-amp.jpg?w=800&ssl=1 800w" sizes="(max-width: 300px) 100vw, 300px" />This circuit is perfect pre-amp to amplify the signal from a mono microphone. It is based on the use of a type integrated circuit TL062, a little less known perhaps as the TL082 or TL072 often used by maniacs audio.

This integrated circuit has two operational amplifier in a housing 8-pin, and has good performance alone, mostly in terms of noise and power consumption. Its use for portable audio applications.

Mono preamp Parts list :
R1 : 150K
R2,R8 : 2K7
R3 : 82K
R4 : 4K7
R5, R6 : 68K
R7 : 100K
RV1 : 100K variable
C1,C6 : 22uF
C2 : 220nF
C3 : 1uF
C4,C5 : 100u
FU1 : TL062

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