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 71 
 on: January 08, 2019, 11:39:20 11:39 
Started by Wizpic - Last post by mick
Hello

looking for Silicon Chip Aug 2013

               Thank you

 72 
 on: January 08, 2019, 05:51:28 05:51 
Started by Sideshow Bob - Last post by Sideshow Bob
I came by this documentary about the history of the transistor on youtube. Even if it is quite old and the video quality is not the best. At least I found it quite interesting and worth watching. https://www.youtube.com/user/filipedpaixao
You can watch the full documentaty "Transistor Full Documentary play time 56:55" But it is also split up in 6 "episodes" with a lenght of about 10 minutes. I am not in any way affilated with the poster of this video


 73 
 on: January 07, 2019, 03:41:35 15:41 
Started by Signal - Last post by max
You can use the flash storage module with spi interface

https://www.ebay.com/itm/Perfeclan-Storage-Module-32-64-128Mbit-Flash-SPI-Interface-Control-Module/292904874008?hash=item44327db018:m:mM36RcHPf92-4GSSOuqsJQQ:rk:2:pf:0

 74 
 on: January 07, 2019, 12:14:14 12:14 
Started by especialista - Last post by PM3295
With a few more simple modifications, it should perform very well. Together with the higher supply voltages, it could produce about 20 W into a 4 ohm speaker load at a low THD near 0.004%. As shown all harmonics of the 1 kHz input tone is down almost 90 dB. Bear in mind that the original design without global feedback may have produced over 3% THD at full power. For good thermal stability, the diode should be mounted close to the heat-sink.

Make sure you set P1(multi-turn) for an idling current between 10-20 mA flowing in the main output transistors once the amplifier has warmed up.

Posted on: January 01, 2019, 12:33:38 12:33 - Automerged

Distortion and noise can be further cleaned up by using a better low noise opamp like the LT1028. It shows nearly a 4 times reduction in the THD going from the LF351 to a LT1028.

 75 
 on: January 06, 2019, 09:13:03 21:13 
Started by Signal - Last post by Signal
You can use also CH376S USB Read/Write module
Interesting. In case I need to add USB flash to some project this module could be useful.
Though I see some disadvantages using it as a data logger.
1) a size of USB flash is bigger, CH376S module is bigger
2) I expect USB flash consumes more power (additional controller), though I did not find any power specification for this module
3) 5V supply is not convenient for autonomous project.

So having a card reader why to use USB flash for logger? What do I miss?

 76 
 on: January 06, 2019, 12:45:17 12:45 
Started by thavali - Last post by thehelpdeskguy
I appreciate your efforts.  Thank you. (No 'Thank you' button)

 77 
 on: January 05, 2019, 01:56:45 01:56 
Started by Signal - Last post by gabriel
You can use also CH376S USB Read/Write module (from aliexpress or others) which include a very cheap "usb flash to serial", there's also a project made with arduino (may be you can adapt it to PIC): https://arduinobasics.blogspot.com/2015/05/ch376s-usb-readwrite-module.html, source code included.

HTH

 78 
 on: January 04, 2019, 08:39:22 08:39 
Started by shh200438 - Last post by shh200438
CountryChina
NoteHello, sonsivri member, please help me to register, i want to join  you to discuss to PicBasic etc. Thank you very much.

 79 
 on: January 04, 2019, 04:01:52 04:01 
Started by adreca - Last post by adreca
CountryNorway
NoteAm at my last year as a Electronics Engeneer. Done electronics and microcontrollers a long time.
Skills: PCB layout (Altium), Programming mc and analog to digital system development.
Lang: C, PIC and assembly

 80 
 on: January 03, 2019, 03:12:08 15:12 
Started by especialista - Last post by especialista
Thank you!
Happy new year for you and all of yours!

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