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ocrdu
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I have no background in electrical engineering other than curiosity; I'm more of a copycat. I have been trying to reproduce this schematic:

enter image description here

555

I have searched the forum but don't see anything remotely close to what I am doing.

I have built it as per the schematic. I did add an LED to pin 7 of the LM311 as an indicator the signal is working (one thing of note: I can only get a signal on output if I press the "normally open" momentary button).

I am feeding the audio through a BT module. When I scope the output I do get a reading:

scope

I have no idea if it's correct. I never used a scope before.

When pin 7 of the comparator is connected to the reset pin of the 555 I should get a polyphonic square wave (I believe) from pin 3, which drives a BC327 transistor which will in turn operate the gate of an IRFP260 MOSFET.

LEDs

The two red LEDs tell me the 555 and the BC327 are both outputting power constantly. They should both be flashing if the reset pin is being triggered properly. I don't know if I need a pulldown resistor on pin 4 or if my output from pin 7 is not switching to low as I understand it should. Any help is appreciated.

Here's a link to the finished project: https://youtu.be/DBukpYea4mQ

I have no background in electrical engineering other than curiosity; I'm more of a copycat. I have been trying to reproduce this schematic:

enter image description here

555

I have searched the forum but don't see anything remotely close to what I am doing.

I have built it as per the schematic. I did add an LED to pin 7 of the LM311 as an indicator the signal is working (one thing of note: I can only get a signal on output if I press the "normally open" momentary button).

I am feeding the audio through a BT module. When I scope the output I do get a reading:

scope

I have no idea if it's correct. I never used a scope before.

When pin 7 of the comparator is connected to the reset pin of the 555 I should get a polyphonic square wave (I believe) from pin 3, which drives a BC327 transistor which will in turn operate the gate of an IRFP260 MOSFET

LEDs

The two red LEDs tell me the 555 and the BC327 are both outputting power constantly. They should both be flashing if the reset pin is being triggered properly. I don't know if I need a pulldown resistor on pin 4 or if my output from pin 7 is not switching to low as I understand it should. Any help is appreciated.

Here's a link to the finished project: https://youtu.be/DBukpYea4mQ

I have no background in electrical engineering other than curiosity; I'm more of a copycat. I have been trying to reproduce this schematic:

enter image description here

555

I have searched the forum but don't see anything remotely close to what I am doing.

I have built it as per the schematic. I did add an LED to pin 7 of the LM311 as an indicator the signal is working (one thing of note: I can only get a signal on output if I press the "normally open" momentary button).

I am feeding the audio through a BT module. When I scope the output I do get a reading:

scope

I have no idea if it's correct. I never used a scope before.

When pin 7 of the comparator is connected to the reset pin of the 555 I should get a polyphonic square wave (I believe) from pin 3, which drives a BC327 transistor which will in turn operate the gate of an IRFP260 MOSFET.

LEDs

The two red LEDs tell me the 555 and the BC327 are both outputting power constantly. They should both be flashing if the reset pin is being triggered properly. I don't know if I need a pulldown resistor on pin 4 or if my output from pin 7 is not switching to low as I understand it should. Any help is appreciated.

Here's a link to the finished project: https://youtu.be/DBukpYea4mQ

added 5 characters in body
Source Link
ocrdu
  • 9.3k
  • 23
  • 32
  • 42

First post here please be kind. I have no background in electrical engineering other than curiosity; I'm more of a copycat. I have been trying to reproduce this schematic:

Franzoli Electronics "Easy Flyback 1"enter image description here

555]2555

I have searched the forum but don't see anything remotely close to what I am doing.

I have built it as per the schematic. I did add an LED to pin 7 of the LM311 as an indicator the signal is working (one thing of note: I can only get a signal on output if I press the "normally open" momentary button).

I am feeding the audio through a BT module. When I scope the output I do get a reading:

scope]3scope

I have no idea if it's correct. I never used a scope before.

When pin 7 of the comparator is connected to the reset pin of the 555 I should get a polyphonic square wave (I believe) from pin 3, which drives a BC327 transistor which will in turn operate the gate of an IRFP260 MOSFET

LEDs]4LEDs

The two red LEDs tell me the 555 and the BC327 are both outputting power constantly. They should both be flashing if the reset pin is being triggered properly. I don't know if I need a pulldown resistor on pin 4 or if my output from pin 7 is not switching to low as I understand it should. Any help is appreciated.

Here's a link to the finished project: https://youtu.be/DBukpYea4mQ

First post here please be kind. I have no background in electrical engineering other than curiosity; I'm more of a copycat. I have been trying to reproduce this schematic:

Franzoli Electronics "Easy Flyback 1"

555]2

I have searched the forum but don't see anything remotely close to what I am doing.

I have built it as per the schematic. I did add an LED to pin 7 of the LM311 as an indicator the signal is working (one thing of note: I can only get a signal on output if I press the "normally open" momentary button).

I am feeding the audio through a BT module. When I scope the output I do get a reading:

scope]3

I have no idea if it's correct. I never used a scope before.

When pin 7 of the comparator is connected to the reset pin of the 555 I should get a polyphonic square wave (I believe) from pin 3, which drives a BC327 transistor which will in turn operate the gate of an IRFP260 MOSFET

LEDs]4

The two red LEDs tell me the 555 and the BC327 are both outputting power constantly. They should both be flashing if the reset pin is being triggered properly. I don't know if I need a pulldown resistor on pin 4 or if my output from pin 7 is not switching to low as I understand it should. Any help is appreciated.

Here's a link to the finished project: https://youtu.be/DBukpYea4mQ

I have no background in electrical engineering other than curiosity; I'm more of a copycat. I have been trying to reproduce this schematic:

enter image description here

555

I have searched the forum but don't see anything remotely close to what I am doing.

I have built it as per the schematic. I did add an LED to pin 7 of the LM311 as an indicator the signal is working (one thing of note: I can only get a signal on output if I press the "normally open" momentary button).

I am feeding the audio through a BT module. When I scope the output I do get a reading:

scope

I have no idea if it's correct. I never used a scope before.

When pin 7 of the comparator is connected to the reset pin of the 555 I should get a polyphonic square wave (I believe) from pin 3, which drives a BC327 transistor which will in turn operate the gate of an IRFP260 MOSFET

LEDs

The two red LEDs tell me the 555 and the BC327 are both outputting power constantly. They should both be flashing if the reset pin is being triggered properly. I don't know if I need a pulldown resistor on pin 4 or if my output from pin 7 is not switching to low as I understand it should. Any help is appreciated.

Here's a link to the finished project: https://youtu.be/DBukpYea4mQ

added 5 characters in body
Source Link
ocrdu
  • 9.3k
  • 23
  • 32
  • 42

First post here please be kind. I have no background in electrical engineering other than curiosity.curiosity; I'm more of a copycat. I have been trying to reproduce this schematic,:

Franzoli Electronics "Easy Flyback 1"

555]  5552 I

I have searched the forum but don't see anything remotely close to what I am doing. I

I have built it as per the schematic. I did add an LED to pin 7 of the LM311 as an indicator the signal is working. (Oneone thing of note,: I can only get a signal on output if I press the "normally open" momentary button).

I am feeding the audio through a BT module. When I scope the output I do get a reading. :

scope]scope3(I

I have no idea if it's correct. I never used a scope before.) 

When pin 7 of the comparator is connected to the reset pin of the 555 I should get a polyphonic square wave (I believe) from pin 3, which drives a BC327 transistor which will in turn operate the gate of an irfp260IRFP260 MOSFET

LEDs]LEDs4 the 2

The two red LEDs tell me the 555 and the BC327 are both outputting power constantly. They should both be flashing if the reset pin wasis being triggered properly. I don't know if I need a pulldown resistor on pin 4 or if my output from pin 7 is not switching to low as I understand it should. Any help is appreciated. I am incredibly new to oscilloscopes and am slowly learning how to use them.

Here's a link to the finished project.

: https://youtu.be/DBukpYea4mQ

First post here please be kind. I have no background in electrical engineering other than curiosity. I'm more of a copycat. I have been trying to reproduce this schematic,Franzoli Electronics "Easy Flyback 1"]  555 I have searched the forum but don't see anything remotely close to what I am doing. I have built it as per the schematic. I did add an LED to pin 7 of the LM311 as an indicator the signal is working. (One thing of note, I can only get a signal on output if I press the "normally open" momentary button) I am feeding the audio through a BT module. When I scope the output I do get a reading. scope(I have no idea if it's correct. I never used a scope before.) When pin 7 of the comparator is connected to reset of the 555 I should get a polyphonic square wave (I believe) from pin 3, which drives a BC327 transistor which will in turn operate the gate of an irfp260 MOSFETLEDs the 2 red LEDs tell me the 555 and the BC327 are both outputting power constantly. They should both be flashing if the reset pin was being triggered properly. I don't know if I need a pulldown resistor on pin 4 or if my output from pin 7 is not switching to low as I understand it should. Any help is appreciated. I am incredibly new to oscilloscopes and am slowly learning how to use them.

Here's a link to the finished project.

https://youtu.be/DBukpYea4mQ

First post here please be kind. I have no background in electrical engineering other than curiosity; I'm more of a copycat. I have been trying to reproduce this schematic:

Franzoli Electronics "Easy Flyback 1"

555]2

I have searched the forum but don't see anything remotely close to what I am doing.

I have built it as per the schematic. I did add an LED to pin 7 of the LM311 as an indicator the signal is working (one thing of note: I can only get a signal on output if I press the "normally open" momentary button).

I am feeding the audio through a BT module. When I scope the output I do get a reading:

scope]3

I have no idea if it's correct. I never used a scope before. 

When pin 7 of the comparator is connected to the reset pin of the 555 I should get a polyphonic square wave (I believe) from pin 3, which drives a BC327 transistor which will in turn operate the gate of an IRFP260 MOSFET

LEDs]4

The two red LEDs tell me the 555 and the BC327 are both outputting power constantly. They should both be flashing if the reset pin is being triggered properly. I don't know if I need a pulldown resistor on pin 4 or if my output from pin 7 is not switching to low as I understand it should. Any help is appreciated.

Here's a link to the finished project: https://youtu.be/DBukpYea4mQ

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