100 Circuits - Audio 1

By Newton C. Braga

During the long career of the author as a writer of technical articles and books, he have on several occasions addressed the theme "collection of circuits", also including information. Thus, previously, addressing this theme, he published the series "Circuits and Information" (7 volumes) and "Circuits and Solutions" (5 volumes) containing hundreds of useful circuits and technical information of all kinds. The series has run out, time has passed, but readers still charge us something similar updated and that can still be used in projects of all kinds. In fact, basic circuits using ordinary discrete components, from transistors to integrated circuits, are still widely used as simple solutions for immediate problems, part of more advanced projects and even for didactic purposes, at the request of a teacher who needs an application for a theory. So, he is back with this series, but with a differentiated structure, new projects and a new approach. The difference in approach will be to divide the various volumes of the series by themes, we will have audio circuits,such as amplifiers, preamplifiier, mixers, etc. In his stock of circuits, collected from all possible sources, he already have more than 12,000 of them, many of which can be accessed in a dispersed way in the site of the author. The advantage of having these circuits organized in volumes, besides access anywhere, is in the easy location of a circuit. The information, on the other hand, will be added to the circuits, with internal links, which is only possible in a digital publication. Most of these circuits, collected in publications that, in some cases, may not be very current, receive a special treatment with comments, suggestions and updates that make possible its execution even in our days.

• Language: English
• Publisher: Editora NCB
• Release date: Apr 17, 2017
• ISBN: 9788565051385

Book preview

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Newton C. Braga

Circuit Banch - volume 1

100 Audio Circuits - 1

1a EDITION

São Paulo - 2017

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Instituto NCB

www.newtoncbraga.com

[e-mail]

Director: Newton C. Braga

Designer: Renato Paiotti

CIRCUIT BENCH – V2 – 100 AUDIO CIRCUITS

Author: Newton C. Braga

São Paulo - Brasil - 2017

Key words: electronics – audio - circuits

More Informations

INSTITUTO NEWTON C. BRAGA

http://www.newtoncbraga.com.br

Índice

Introduction

1) Simple mixer

2) Bass and Treble Control

3) RIAA Preamplifier

4) Parametric Equalizer

5) Super-Bass Amplifier

6) CMOS Mixer

7) Microphone Booster

8) Pre Amplifier for Crystal Microphone With 741

9) Magnetic Pickup Preamplifier Using the 741

10) General Purpose Preamplifier

11) Bass-Booster Preamplifier with 741

12) Preamplifier for Magnetic Microphones with 741

13) Preamplifier for Low Impedance Microphone

14) Low Impedance Preamplifier

15) RIAA Preamplifier Powered By USB

16) Simple Preamplifier Simple

17) Simple Preamplifier II

18) Preamplifier with Several Gains

19) Cassette Recorder Preamplifier

20) Microphone Preamplifier II

21) Preamplifier for Low Impedance Microphone II

22) Active Tone Control with the 741 IC

23) RIAA Preamplifier II

24) Bass, Middle, and Treble Control with 741

25) NAB Preamplifier

26) High Impedance Preamplifier

27) Microphone Preamplifier

28) Scratch Filter forTurntable

29) Rumble Filter

30) Bass Boost

31) Noise Limiter

32) Preamplifier with Virtual Ground

33) Audio Limiter

34) Active Crossover

35) Parametric Equalizer II

36) Audio Booster

37) Audio Switch

38) Rumble Filter II

39) Scratch Filter II

40) Medium Control

41) 60 Hz filter

42) Audio Preamplifier

43) RIAA Preamplifier III

44) General Purpose Preamplifier II

45) Universal Preamplifier for Microphone

46) Transistor Amplifier Stage

47) Voice Booster

48) Low Impedance Microphone Preamplifier III

49) Sub-Woofer Filter

50) Bass, Middle and Treble Control II

51) 700 mW amplifier with LM386

52) Telephone amplifier with LM386

53) Class A Amplifier - 10 W

54) Small Amplifier

55) Complementary Mini Amplifier

56) Small Amplifier for Microphone - LM386

57) Headphones Amplifier

58) 1.5 W Transistor Amplifier

59) 3-W Amplifier with MOSFET

60) Amplifier using the LM380 IC

61) Low power transistor amplifier

62) Transistor Amplifier with the BC548-BC558

63) Old Transistor Amplifier

64) High Quality Amplfier for Headphones

65) Darlington Audio Stage

66) 4-Watt Transistor Amplifier

67) 1-W Transistor Amplifier

68) General Purpose Phone Amplifier

69) Amplifier for Earphones II

70) Headphones Amplifier III

71) 1-W Headphones Amplifier

72) Mini Amplifier

73) Bridge LM388 Amplifier

74) MOSFET Power Stage

75) 5.5 W Amplifier - LA4420

76) Stereo Headphones Amplifier

77) Amplifier with 741 - I

78) Amplifier with 741 - II

79) Audio Power Amplifier with 741

80) 280 mW amplifier with 741

81) Two-Transistor Amplifier

82) Amplifier for Telephone Pickup

83) Amplifier for Telephone Pickup - II

84) Telephone Amplifier with TDA7052

85) 280 mW Amplifier Using the 741 OA – II

86) Small Amplifier

87) PWM Amplifier (Class D)

88) Amplifier V 5 x 60 mW - TTL

89) Megaphone

90) Power Stage with TIP31

91) M150 Amplifier- Ibrape

92) 10 W Transistor Amplifier

93) 10 W-Transistor Amplifier II

94) Hybrid Amplifier - 10 or 20W

95) 15W MOSFET Amplifier

96) 7W Amplifier with LM383

97) Class A Amplifier - 2N3055

98) LM386 Amplifier with 741 Preamplifier

99) Transistor Amplifier - TIP31 / 32

100) 5 W Amplifier - TIP31-TIP32

Information about the Principal Components

FET - TRANSISTOR – TUBE

Introduction

The term Circuit Bench was used many times along our long career as a technical writer of books and articles all over the world. So, prior this serie, based in this theme we had published two book collections in Brazil: Circuits and Informations (Circuitos e Informações) – 7 volumes and Circuits and Solutions (Circuitos e Soluções – 5 volumes). These collections gathered hundreds of circuits and useful information about components, design, formulas and tables. The series are out of print now but our readers are asking us for something like that to be used in electronic projects of all kind. In fact, basic circuits using common discrete componentes such as transistors and Ics are today used as fast solutions for imediat problems, part of more advanced projects, as shields for microcontrollers and with didatic purposes for a school work or demonstration. So, we returned with this serie, but with a different approach and new projects. The different approach is the division of the volumes by themes. So, in this second volume the circuits gathered had audio as main subject. In fact, since we have in our collection more than 12 000 circuits many, of then can be found in our site, but following no organization. The advantage for the reader is that in this book the circuits are organized by