Tagged Questions
2
votes
2answers
737 views
How to calculate a current being drawn by a full wave rectifier diode bridge?
I've been studying power supplies and diodes, all books I've read discuss a great deal of things, but there's something I haven't found, and that is how to calculate how much current a bridge ...
4
votes
1answer
127 views
How to protect an electronic construction kit (a toy) from damages?
As I child, I had this electronic construction kit called Elektronik 1. It was manufectured in former Czechoslovakia, based on resistors, diodes, bjt transistors, capacitors, an LW+SW radio antenna ...
7
votes
1answer
179 views
Current flow priorities in PSU / PSU review
Being an electronics hobbyist, I'm having quite a challenge to design a PSU, which must run both on batteries (during the night time) as well as on Solar energy (daytime). The device is intend to run ...
8
votes
5answers
719 views
Diode between VCC and GND
I was having a look at some guitar effect circuits and came across with a company that offers PCBs for some well known circuits. I have noticed that most of ther circuits have a 1N4001 (D1) placed ...
4
votes
1answer
712 views
Current limiters using transistors and diodes
I have been experimenting with simulating current limiting circuits. I am trying to limit current to ~500mA given a fixed 4.8V source. I started a question based on a conventional 2-transistor current ...
3
votes
2answers
309 views
What efficient techniques exist for rectifying high voltage?
I want to rectify 120V (mains North America) at a relatively high amount of current (5 amps), so naturally my first idea is to just find a bridge rectifier. After finding one capable of the current ...
2
votes
2answers
103 views
Device is reset when switching power sources
I use a home weather station. It is powered by two AA batteries (2 x 1.5 = 3.0 V nominal). The problem is that it eats more than 1 mA and that is quite a lot of power and I must buy a new pair of AA ...
10
votes
4answers
3k views
Is full wave rectifier better than half wave one?
I am curious if there are practical differences between a DC power supply based on a half wave rectifier or a full wave rectifier.
I mean I have a few small DC power supply units which should give ...
3
votes
3answers
239 views
Diode substitution in power supply
Can I substitute 3A diodes in a plug in power supply for 2A 50V diode? Should I replace all 4 in the bridge? It's a 15VDC 1300mA power supply.
10
votes
3answers
554 views
Simple \$12V_{AC}\$ to \$12V_{DC}\$ Rectifier
I want to convert a \$12V_{AC}\$ power supply output to use \$12V_{DC}\$ to power some outdoor LEDs.
The power supply as it stands will light the LEDs (with a slight flicker from the reverse ...
6
votes
4answers
1k views
Two diodes in parallel for over-voltage protection
I've got a power supply circuit that needs the input to be protected against some pretty big voltage spikes. To do this, I need a really beefy clamping diode (D1) that will handle the voltage and ...
0
votes
1answer
166 views
What is the diode current when used in clipping/clamping
The rule of thumb is that when a diode is fully on, it looks like a short circuit (ideally). So (to make this easy), say I have 100 V source and a diode which breaks down at 10V. If my power ...
