iam using a lm317 lm337 circuit keep getting pop noise every 15 sec 7volts and -7 volts
P prorms Member Joined 2006 2007-09-11 3:30 am #1 2007-09-11 3:30 am #1 iam using a lm317 lm337 circuit keep getting pop noise every 15 sec 7volts and -7 volts Attachments 00906301.jpg 14.8 KB · Views: 123 ••• More options Share P prorms Member Joined 2006 2007-09-11 3:34 am #2 2007-09-11 3:34 am #2 .. ... Attachments 00906701.jpg 11.8 KB · Views: 107 ••• More options Share P prorms Member Joined 2006 2007-09-11 3:36 am #3 2007-09-11 3:36 am #3 basic diode setup 4 diode transfomer 14vct 0.250 mA ••• More options Share P prorms Member Joined 2006 2007-09-11 2:10 pm #4 2007-09-11 2:10 pm #4 ... opamp iam using are opa134 lf351 iam have connect with no resistors just stright in ••• More options Share D Dzsoni Member Joined 2007 2007-09-11 2:20 pm #5 2007-09-11 2:20 pm #5 Every 15 sec? Strange... LLOks like a capacitor-problem... Value of PS caps in uF? About 1000uF would be OK. [On the margin I would use much higher rails for the OPAs, say +/-15V.] ••• More options Share P prorms Member Joined 2006 2007-09-12 12:15 am #6 2007-09-12 12:15 am #6 ... was not the power supply section but it was the last part of the preamp that goes to the power amp preamp on its own powersupply and circuit form the power amp in stead of using diff voltage i use like a battery Attachments 00934107.jpg 29.1 KB · Views: 73 ••• More options Share Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
P prorms Member Joined 2006 2007-09-11 3:34 am #2 2007-09-11 3:34 am #2 .. ... Attachments 00906701.jpg 11.8 KB · Views: 107 ••• More options Share P prorms Member Joined 2006 2007-09-11 3:36 am #3 2007-09-11 3:36 am #3 basic diode setup 4 diode transfomer 14vct 0.250 mA ••• More options Share P prorms Member Joined 2006 2007-09-11 2:10 pm #4 2007-09-11 2:10 pm #4 ... opamp iam using are opa134 lf351 iam have connect with no resistors just stright in ••• More options Share D Dzsoni Member Joined 2007 2007-09-11 2:20 pm #5 2007-09-11 2:20 pm #5 Every 15 sec? Strange... LLOks like a capacitor-problem... Value of PS caps in uF? About 1000uF would be OK. [On the margin I would use much higher rails for the OPAs, say +/-15V.] ••• More options Share P prorms Member Joined 2006 2007-09-12 12:15 am #6 2007-09-12 12:15 am #6 ... was not the power supply section but it was the last part of the preamp that goes to the power amp preamp on its own powersupply and circuit form the power amp in stead of using diff voltage i use like a battery Attachments 00934107.jpg 29.1 KB · Views: 73 ••• More options Share Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
P prorms Member Joined 2006 2007-09-11 3:36 am #3 2007-09-11 3:36 am #3 basic diode setup 4 diode transfomer 14vct 0.250 mA ••• More options Share P prorms Member Joined 2006 2007-09-11 2:10 pm #4 2007-09-11 2:10 pm #4 ... opamp iam using are opa134 lf351 iam have connect with no resistors just stright in ••• More options Share D Dzsoni Member Joined 2007 2007-09-11 2:20 pm #5 2007-09-11 2:20 pm #5 Every 15 sec? Strange... LLOks like a capacitor-problem... Value of PS caps in uF? About 1000uF would be OK. [On the margin I would use much higher rails for the OPAs, say +/-15V.] ••• More options Share P prorms Member Joined 2006 2007-09-12 12:15 am #6 2007-09-12 12:15 am #6 ... was not the power supply section but it was the last part of the preamp that goes to the power amp preamp on its own powersupply and circuit form the power amp in stead of using diff voltage i use like a battery Attachments 00934107.jpg 29.1 KB · Views: 73 ••• More options Share Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
P prorms Member Joined 2006 2007-09-11 2:10 pm #4 2007-09-11 2:10 pm #4 ... opamp iam using are opa134 lf351 iam have connect with no resistors just stright in ••• More options Share D Dzsoni Member Joined 2007 2007-09-11 2:20 pm #5 2007-09-11 2:20 pm #5 Every 15 sec? Strange... LLOks like a capacitor-problem... Value of PS caps in uF? About 1000uF would be OK. [On the margin I would use much higher rails for the OPAs, say +/-15V.] ••• More options Share P prorms Member Joined 2006 2007-09-12 12:15 am #6 2007-09-12 12:15 am #6 ... was not the power supply section but it was the last part of the preamp that goes to the power amp preamp on its own powersupply and circuit form the power amp in stead of using diff voltage i use like a battery Attachments 00934107.jpg 29.1 KB · Views: 73 ••• More options Share Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button. Share: Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link
D Dzsoni Member Joined 2007 2007-09-11 2:20 pm #5 2007-09-11 2:20 pm #5 Every 15 sec? Strange... LLOks like a capacitor-problem... Value of PS caps in uF? About 1000uF would be OK. [On the margin I would use much higher rails for the OPAs, say +/-15V.] ••• More options Share P prorms Member Joined 2006 2007-09-12 12:15 am #6 2007-09-12 12:15 am #6 ... was not the power supply section but it was the last part of the preamp that goes to the power amp preamp on its own powersupply and circuit form the power amp in stead of using diff voltage i use like a battery Attachments 00934107.jpg 29.1 KB · Views: 73 ••• More options Share Show hidden low quality content Status This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Every 15 sec? Strange... LLOks like a capacitor-problem... Value of PS caps in uF? About 1000uF would be OK. [On the margin I would use much higher rails for the OPAs, say +/-15V.]
P prorms Member Joined 2006 2007-09-12 12:15 am #6 2007-09-12 12:15 am #6 ... was not the power supply section but it was the last part of the preamp that goes to the power amp preamp on its own powersupply and circuit form the power amp in stead of using diff voltage i use like a battery Attachments 00934107.jpg 29.1 KB · Views: 73 ••• More options Share
... was not the power supply section but it was the last part of the preamp that goes to the power amp preamp on its own powersupply and circuit form the power amp in stead of using diff voltage i use like a battery