I wrote a about a simple shunt voltage regulator design with TL431 but circuit is usually not recommended for moderate to high current application or battery powered circuits. In the shunt mode, the TL431 will draw current from the source even if t…
There are many components that can be reused from old desktop PSU(Power Supply Unit). I have written about many components that can be salvaged from SMPS(Switch Mode Power Supply) like PC817 optocoupler that can be used to build Arduino inverter …
Using an external pass transistor with a voltage regulator like the 78XX series allows you to safely boost its current output beyond its internal limit. Using an external pass transistor with a 78XX regulator reduces the heating of the regulator i…
I have come across an IC that is used in diy Arduino Inverter and this IC is called MC34063 and I wanted to know what this IC is and where it is typically used. So this is note on this IC. The MC34063 is a DC-DC converter IC that can be configure…
I think its been 10 days now that I started to learn more about negative feedback amplifier and how to use it. I covered the 3 types of negative feedback amplifier, voltage amplifier , transimpedance amplifier , transconductance amplifier and cur…
I came across the name of TL431 many times and while during this week I was learning negative feedback amplifier circuits I happened to encounter TL431 once again. I think it was during writing about Voltage Controlled Current Source with Op-Amp . T…
I am glad that I cleaned up my lab today because I found some chips that I think can be useful in many projects. Another IC I found is the TLV1117 and since I forgot what it is I had to read about it again first. So TLV1117 is a low dropout voltage…
I had a 6V 4.5Ah Sealed Lead Acid rechargeable battery lying around for sometime now.I don't remember from where I got this but ever since I saw it I wanted to build a charger for it. I was working on learning power supply circuits such as serie…
Designing and testing various power supplies circuit can be helpful in more complicated circuit design or lower the cost of the power supply. For example we showed how Arduino or any small microcontrollor board or circuit can be powered with a low …
The passive output stage is a traditional design approach commonly found in power supply systems. It utilizes passive semiconductor rectifiers and is suitable for applications that do not rely on battery power. This method is widely adopted in scena…
