Balance input-amp-bl2013 htl-2_2
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This document is a schematic for a balanced input amplifier and real-time input signal indicator circuit. It uses two operational amplifiers configured as balanced input buffers to receive balanced audio signals from channels A and B. Additional circuitry provides LED indicators to show the real-time signal level on each channel. The design is made available under the GNU GPL v3 open source license.
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Balance input-amp-bl2013 htl-2_2
- 1. 1 +15V 2 3 4 -15V A.OUT CNT103 B.OUT CNT105 B.OUT B.IN+ B.IN- CNT104 B.S.LED A.OUT + A C110 10uF 16V C107 10uF 16V + C106 10uF 16V + C113 47uF 16V R116 2.2K + R109 15K C109 330pF R108 15K R106 15K R107 15K C108 330pF C114 330pF R115 15K 2 R114 150 B.OUT CNT102 1 2 3 B.IN+ B.R.OUT B.IN- +15V 8 7 6 5 +15V 8 7 6 CNT107 1 2 3 CNT108 1 B.R.OUT R110 330 CNT106 1 2 3 5 CNT109 1 2 3 CNT110 1 2 CNT101 1 2 3 A.IN+ U101 JRC4580 A.IN- U102 JRC4580 CNT111 1 5 MATRIX 1.4 FREE & OPEN LICENSED AUDIO POWER AMPLIFIER DESIGN MISC. CIRCUIT PROJECT: BALANCED INPUT AMPLIFIER & REALTIME INPUT SIGNAL INDICATOR LISENSI ===== SKEMATIK INI ADALAH HASIL KARYA INTELEKTUAL TERBUKA, YANG DILISENSIKAN DI BAWAH KETENTUAN-KETENTUAN GNU GENERAL PUBLIC LICENSE V.3 (DARI FREE SOFTWARE FOUNDATION INCORPORATION). A INI ADALAH DESAIN CUMA-CUMA. ANDA DIMUNGKINKAN MENGGUNAKAN, MENGUBAH, DAN MENGEDARKAN ULANG, NAMUN, ANDA HARUS MENYERTAKAN CATATAN LISENSI INI (ATAU CATATAN LISENSI SERUPA SESUAI PILIHAN ANDA) DAN MENYERTAKAN SALINAN DARI (ATAU PRANALA MENUJU SITUS) GNU GENERAL PUBLIC LICENSE V.3 (ATAU SESUAI PILIHAN ANDA TERKAIT VERSI LISENSI TERBARU). RANCANGAN INI TERSEDIA TANPA JAMINAN. TINJAU SALINAN LISENSI PADA SITUS: http://www.gnu.org/licenses/gpl.html LICENSE ====== THIS SCHEMATIC IS DERIVATIVE OF OPEN INTELLECTUAL WORK, WHICH LICENSED UNDER THE TERMS OF GNU GENERAL PUBLIC LICENSE V.3 (FROM FREE SOFTWARE FOUNDATION INCORPORATION). THIS IS FREE DESIGN. YOU MAY USE, MODIFY, OR REDISTRIBUTE IT BUT, YOU MUST ENCLOSE THIS LICENSE NOTICE (OR SIMILAR LICENSE NOTICE AT YOUR OPTION) AND ENCLOSE THE COPY OF (OR LINK TO SITE OF) THE GNU GENERAL PUBLIC LICENSE V.3 (OR AT YOUR OPTION OF ANY LATER VERSION LICENSE). THIS DESIGN IS PROVIDED WITH ABSOLUTELY NO WARRANTY. 2 A.R.OUT 1 2 3 -15V 4 1 2 3 4 SEE THE COPYLEFT OF LICENSE AT: http://www.gnu.org/licenses/gpl.html CNT112 1 -15V 2 CONNECTIONS: B R105 330 R104 15K C104 330pF R103 15K R101 15K R102 15K C103 330pF C112 330pF R112 15K A.R.OUT + C105 10uF 16V C102 10uF 16V + C101 10uF 16V + A.INA.OUT R113 2.2K CNT113 R111 150 B.OUT + C111 47uF 16V B.S.LED 1 2 3 4 CNT114 1 2 A.S.LED A.IN+ A.S.LED CNT115 1 2 B CONNECTORS DESCRIPTIONS CNT101 CNT102 CNT103 CNT104 CNT105 CNT106 CNT107 CNT108 CNT109 CNT110 CNT111 CNT112 CNT113 CNT114 CNT115 CHANNEL-A BALANCE INPUT CHANNEL-B BALANCE INPUT B.I.A +15V SUPPLY B.I.A SUPPLY GROUND B.I.A -15V SUPPLY COMMON B.I.A DUAL-CHAN. OUT CHANNEL-A VOLUME CONTROL CHANNEL-A B.I.A CONTROLLED OUTPUT CHANNEL-B VOLUME CONTROL CHANNEL-B B.I.A CONTROLLED OUTPUT CHANNEL-A POWER AMP. OUT TO BRIDGE MODE CHANNEL-B POWER AMP. BRIDGE IN TO BRIDGE MODE STEREO/BRIDGE MODE OUTPUT SWITCH CHANNEL-A REALTIME SIGNAL INDICATOR/LED CHANNEL-B REALTIME SIGNAL INDICATOR/LED C C DESIGNED BY HERU HIMAWAN T. ALATAS MATRIX 1.4 - FREE & OPEN AUDIO POWER AMPLIFIER TECHNOLOGY DEVELOPMENT http://matrix14freeamp.sourceforge.net/ File: BALANCE-INPUT-AMP-BL2013HTL.sch Sheet: / Title: BALANCED INPUT AMPLIFIER & INPUT SIGNAL INDICATOR Size: A4 Date: 22 mar 2013 KiCad E.D.A. 1 2 3 4 Rev: 1.0 Id: 1/1 5