The Return of Bright LED
From my Thunderbird archives. it may be interesting to read, maybe you may learn a thing or two. Many thanks for your quick reply – much appreciated. The FET solution is new to me,...
Driving a LED from MCU
I just read your blog and found it very helpful – thank you. I am working on a new toy project and have a problem I think you can help with. I am turning...
Analog mV Switch for Digital Meters
Let us assume you have to Measure Amps and Volts in four independent circuits. This becomes a Multi Channel Voltmeter and Ammeter. This circuit uses a 4052 as a DC Analog Multiplexer, the inputs...
LM317 based Regulated Power Supply
This is a Regulated Power Supply based on the LM317 IC. It will need a Boost Power Transistor and heatsink for higher currents. It is a versatile building block for stable instrumentation supplies. Consumer...
Blind Dial Analog Temperature Controller
This is a Low cost controller, Analog Dial Temperature Controller. It is also called Blind Controller. This essentially means Open Loop, just control the fuel or energy input to the system to regulate heat....
24V and 25V Power Supply with 2A Current
I am looking for a 25V Power Supply with 2A current for my Application. A regulated supply. TA – US Here is a simple to build regulated power supply. The two diodes are to...
UPS and Inverter Schematics
Do you perhaps have an inverter schematic for a sinewave inverter or stepped squarewave using the SG3525 chip. I’m also interested in connecting the inverter to the grid via a solar panel. I hope...
Making Coils and Transformers
Message – Can we make Coils and small transformers at home. I have copper wire and some lamination in my stores. – 2005 IJ – AF Making Transformers with good isolation and safety is...
