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Isolated zero crossing detection with logic level output
Wide voltage range 85-265V 50/60Hz
Low current consumption (~0.15mA @ 120V)
Pulse width 50-110us
Opto isolators tested 4N25, PC817, ACPL-217 (and H11L1 with modifications)
3.3V or 5V output
Mini-amp w/ Bass Boost
This is a miniature 0.7W amplifier with adjustable bass boost, gain, and volume controls. Uses 1/8" (3.5mm) headphone jacks on the input and output. Powered by USB or 9v (4-12 VDC, max of 15 VDC). I designed it to use film capacitors and Nichicon audio grade electrolytic capacitors wherever possible in order to preserve the signal and reduce noise. An isolated power supply such as a battery is...
THX208 stripped version
Schematics of a $1 version from aliexpress
PoE to USB PowerPoint
PoE (Power over Ethernet) to USB 5V adapter.
Current use cases:
- Power micro controllers (Arduino's or Pbpi's)
PoE Switch --> **PoE to USB** --power--> Rbpi
Switch ------------Data----------------> Rbpi (There is still a second Ethernet cable needed for data over cable.)
- Charge your Phone or other USB devices
- Trying to support 802.3af
Future plans:
- Add a way to redirect Ethernet d...
Buck converter 5/3.3V
Dual buck converter, i dont'n know if it's work, its just a test project.
ESP2688 Wifi-Relay (smart home)
ESP-based Wifi-Relay,
with NO and NC contact.
project is not (yet) tested,
firmware for the ESP wil be linked soon
Charger 5V
![enter image description here][1]- Load resistor(нагрузочный резистор)
Charger 5V on KP142EH5A with radiator for transistor VT1 and with load resistor. **(WITHOUT LOADING THE OUTLET SCHEME WILL GIVE SAME THAT AND AT THE ENTRANCE !!!)**
- Русский
Зарядка на 5V на основе кр142ен5а с радиатором для транзистора VT1 и нагрузочным резистором. **(БЕЗ НАГРУЗКИ СХЕМА НА ВЫХОДЕ БУДЕТ ДАВАТЬ...
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有问题联系QQ 3001956291 不再提醒
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