Editor Version ×

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 Transformerless Power Supplies and simulations - FAST

  • 3.5k
  • 1
  • 1

No Profile

License: Public Domain

Creation time: 2015-12-13 06:49:37
Update time: 2021-04-11 01:00:10
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.
Design Drawing
schematic diagram
1 /
1 /
ID Name Designator Footprint Quantity
1 BZX5V1 D1 SOD123 1
2 60 V1 2P-5.0 1
3 270 R2,R1 R3 2
4 470u C2 CP_8X13MM 1
5 Ammeter A1 NONE 1
6 1N4001 D2,D3,D4,D5 DO35-7 4
7 1u C1 C1 1
8 0.47k R2 R3 1
9 1.5k R1 R3 1


Project Attachments
Project Members
Target complaint
Related Projects
Change a batch
Add to album ×


reminder ×

Do you need to add this project to the album?


周一至周五 9:00~18:00
  • 0755 - 2382 4495
  • 153 6159 2675


周一至周五 9:00~18:00
  • 立创EDA微信号


  • QQ交流群


  • 立创EDA公众号