1.Easy to use and quick to get started
2.The process supports design scales of 300 devices or 1000 pads
3.Supports simple circuit simulation
4.For students, teachers, creators
1.Brand new interactions and interfaces
2.Smooth support for design sizes of over 30,000 devices or 100,000 pads
3.More rigorous design constraints, more standardized processes
4.For enterprises, more professional users
Std EditionTransformerless Power Supplies and simulations - FAST copy
License: Public Domain
Project source： Cloned from Transformerless Power Supplies and simulations - FAST
These are transformerless power supplies that can feed 5V circuits with current consumption ranges from 20-30 mA to 80-100 mA. Check the C or R values and the configurations. You can simulate to measure supplied voltage and current. The model for Zener diode is on schematics for it. Change values and get your needed output current.
The bridged capacitive version worked fine for a 50mA circuit. The resistive version can reach more than this, but you need a power resistor (5W or more), it maybe too big and heat too much.
Let me know if you have suggestions or comments.
You can simulate in EasyEDA. All parts have the support. Transient Spice simulation is ready to work.
Mind that you need to take care with these circuits as they are directly connected to mains! Only do it if you know how to handle the security.