Author Topic: LM386 Diagram  (Read 1646 times)

Offline pspupgrade

  • Club AM VIP
  • Trade Count: (0)
  • King of the Wii-tards
  • *
  • Posts: 173
  • Post quality +0/-0
  • Gender: Male
  • Bother Bother Bother
    • PSP Upgrade
LM386 Diagram
« on: April 06, 2009, 12:28:12 AM »
Hi there.

Here's (yet) another circuit diagram that I just want to quickly run through with you. I'm doing the LM386 mod with a stereo effect, so I'm using two LM386s. The only thing I'm really concerned about is the resistance, as there are 6 LEDs running off the 5v source, and two of them aren't using the LM386.



Thanks in advance   :victory:
It's the basics that bring us down.

Offline GhoSt

  • Creating Null
  • Trade Count: (0)
  • Around the block
  • *
  • Posts: 2507
  • Post quality +14/-0
  • Gender: Male
  • Null Pointer Exception
    • CreatingNull youtube
Re: LM386 Diagram
« Reply #1 on: April 06, 2009, 12:55:17 AM »
can you show me the data for the leds you are planning to use, then we can caculate a apropriate resistance. you may need 100ohm+
|Variegation - GhoSt's Final Controller|

|It's not where you take things from - it's where you take them to.|

Offline pspupgrade

  • Club AM VIP
  • Trade Count: (0)
  • King of the Wii-tards
  • *
  • Posts: 173
  • Post quality +0/-0
  • Gender: Male
  • Bother Bother Bother
    • PSP Upgrade
Re: LM386 Diagram
« Reply #2 on: April 06, 2009, 01:00:55 AM »
OK, here's the data:

Quote

Technical Spec
Source Material: AlGaInP
Emitting Colour: Yellow
Emitting Wavelength (nm): 585-595
Size: 1.2 x 0.8 mm
Intensity (mcd): 60-100
Viewing Angle (deg): 120
Forward Voltage (V): 1.8-2.4
Forward Current (mA): 20-30




It's the basics that bring us down.

Offline bustinthejustin

  • Registered BST
  • Trade Count: (0)
  • E = MC˛ Mad Scientist
  • *
  • Posts: 2326
  • Post quality +1/-0
  • Gender: Male
Re: LM386 Diagram
« Reply #3 on: April 06, 2009, 02:11:40 PM »
For the two leds not running off an amp, you could use an 180ohm resistor and run the leds in parallel, or an 82ohm resistor and run the leds in series. As for the amps, I'm not sure because i don't know the voltage coming off of those.

Sig by Kenshinffx - Thanks!

Offline GhoSt

  • Creating Null
  • Trade Count: (0)
  • Around the block
  • *
  • Posts: 2507
  • Post quality +14/-0
  • Gender: Male
  • Null Pointer Exception
    • CreatingNull youtube
Re: LM386 Diagram
« Reply #4 on: April 06, 2009, 11:30:22 PM »
Running them in series would be a daft idea, basic physics tells us that the second led in the circut will be dimmer in series.
|Variegation - GhoSt's Final Controller|

|It's not where you take things from - it's where you take them to.|

Offline pspupgrade

  • Club AM VIP
  • Trade Count: (0)
  • King of the Wii-tards
  • *
  • Posts: 173
  • Post quality +0/-0
  • Gender: Male
  • Bother Bother Bother
    • PSP Upgrade
Re: LM386 Diagram
« Reply #5 on: April 11, 2009, 10:21:17 AM »
So, conclusion please?

Sorry, been away for a while
It's the basics that bring us down.

Offline bustinthejustin

  • Registered BST
  • Trade Count: (0)
  • E = MC˛ Mad Scientist
  • *
  • Posts: 2326
  • Post quality +1/-0
  • Gender: Male
Re: LM386 Diagram
« Reply #6 on: April 11, 2009, 07:08:05 PM »
Running them in series would be a daft idea, basic physics tells us that the second led in the circut will be dimmer in series.

You and your smartness D:



So, conclusion please?

Sorry, been away for a while

For the leds not using an amp and just solid on, use an 180ohm resistor and run the leds in parallel.

Sig by Kenshinffx - Thanks!

Offline Blazinkaos

  • Technology Revolution
  • Art & Theme Team
  • Trade Count: (+3)
  • E = MC˛ Mad Scientist
  • *
  • Posts: 2240
  • Post quality +12/-0
  • Gender: Male
  • Time Passes Will You
    • Site
Re: LM386 Diagram
« Reply #7 on: April 11, 2009, 10:48:50 PM »
yea its always best to use parallel on psp

*«Theres Many Steps to Success But it Only Takes One Bad Choice to Crash it All»
*Thanks Modders/Friends:Ghost_Death, gr8npwrfl, Blizzrad, Kenshinffx.
*Thanks 802Chives for the Art position!

Offline pspupgrade

  • Club AM VIP
  • Trade Count: (0)
  • King of the Wii-tards
  • *
  • Posts: 173
  • Post quality +0/-0
  • Gender: Male
  • Bother Bother Bother
    • PSP Upgrade
Re: LM386 Diagram
« Reply #8 on: April 12, 2009, 12:09:19 AM »
Thanks again guys  :tup:.

So, in the end the diagram looks like...


Time to start ordering parts.....
It's the basics that bring us down.

Offline Blazinkaos

  • Technology Revolution
  • Art & Theme Team
  • Trade Count: (+3)
  • E = MC˛ Mad Scientist
  • *
  • Posts: 2240
  • Post quality +12/-0
  • Gender: Male
  • Time Passes Will You
    • Site
Re: LM386 Diagram
« Reply #9 on: April 12, 2009, 05:11:26 PM »
good luck man

*«Theres Many Steps to Success But it Only Takes One Bad Choice to Crash it All»
*Thanks Modders/Friends:Ghost_Death, gr8npwrfl, Blizzrad, Kenshinffx.
*Thanks 802Chives for the Art position!