Dec 7, 2024
DIY #EEPROM #AT24C02C #LM358 #ONSemiconductor #MCP1501T-25E #MICROCHIP #chip #electronic components #ICGOODFIND #Hardware Engineer WWW.ICGOODFIND.COM
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DIY #EEPROM #AT24C02C #LM358 #ONSemiconductor #MCP1501T-25E #MICROCHIP #chip #electronic components #ICGOODFIND #Hardware Engineer WWW.ICGOODFIND.COM
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Breathing Lights circuit. It Works! LM358
Alex's Dad told us Alex seemed to enjoy assembling our kits.
The 1st time we know Alex was last year in May. He began to try our Metal detector with the help of his father.
Congrats! He could do better and better now!
CatalogI OverviewII FeaturesIII ParametersIV FiguresI OverviewThe LM358 includes two independent, high gain, internal frequency compensation double operational amplifiers, and it's suitable for si...
This is simple sensor kit to drive 8 active or passive sensors and log it's data into remote Android application. This system also have an option to activate external device(s) based on specified threshold of sensor data. This sensor controller is mainly build around Raspberry Pi Model 3 B+ and PIC16F877A MCU. PIC16F877A MCU is used to interface/select sensors and it's built-in 10bit multi channel ADC is used to capture the analog signals from sensors.
All the schematics and source codes of this project are available to clone at https://github.com/dilshan/android-datalogger.
AF signal injector and tracer
Signal injector and tracer is very useful device when troubleshooting electronic audio equipment. We decided to build this signal injector by inspiring the article available at June 2016 - Everyday Practical Electronics (EPE) Magazine (Audio Signal Injector and Tracer by John Clarke - Page 22 to 29). The signal injector design in EPE magazine is simple but we got few issues while constructing that circuit. The main issue is that LMC6482 is not available to buy in local market. After few months wait we got couple of ICs from eBay for LKR 600.00. The second issue is it’s output is not enough to drive most of the loudspeakers. After prototyping EPE design we decided to build similar sort of signal injector and tracer with commonly available ICs and with more powerful power amplifier stage. For our design we use LM358 operational amplifier IC which is commonly available in local market (for LKR 15 to 20). For the power amplifier we use LM386 low voltage power amplifier IC (which also costs around LKR 10 - 15). Our design is almost similar to EPE design and the only major addition is LM386 AF power amplifier stage.
We build this signal injector and tracer on a single side PCB. Compare with original EPE design this unit consumes more power and it is not designed to drive using a battery. The AM RF demodulator probe (Page 30 - 31 on same magazine) also works well with this unit. In supplied PCB we does not include attenuator circuit and in our prototype we build it using point-to-point wiring method (on top of the selector switch). Our signal injector and tracer schematics and PCB designs are available to download at google drive. For more detailed overview please check the June 2016 issue of Everyday Practical Electronics magazine.
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LM339のような人生かも？
よく考えると みんな常に比較してる
周りを見てると ADコンバータ まずは数値化して比較する
自分の場合は常に判断基準を探して それよりも上か下か？って感じ DACで基準電圧を作ってLM339で比較する回路かなと
LM339とは コンパレーター回路
あと 探してる人はオペアンプ 型名で言うとＬＭ３５８な人
最近 自分の周りを電子回路で考えることが多い そのほうがしっくり来る
電子回路組んでる人は こんな感じで考えてるだろうか？ マニアックな話をしてみたいです。
とか言ってたら バリバリの人がでてきて こちらが理解不能になるかも（笑）
今日は考える事が多すぎて 思考があっちこっちに行ってる まずは、思考をすっきりさせるため書き出してみました。
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