The components are inexpensive, consisting of a P-MOSFET (for use in the positive rail) with a dual PNP transistor and two resistors. Q1 and Q2 form a current mirror circuit that act as a differential amplifier which responds to the voltage drop across the MOSFET.
I don't want this post to become an advertisement for a specific brand or distributor, but I would like to share some information on a very good deal for a soldering station. I have used this station and it's pretty good quality and nice features for its low price. Even replacement pencil...
Just wondering what can be used as an inexpensive potting compound. The commercial solutions seem fairly expensive at $40.00 for 350ml. The small 12V timer...
The device is not inexpensive (≈$5 USA) but its simplicity and low parts count in this application means the overall parts and assembly costs will likely be significantly less than using a discrete parts design or cheap IC regulator such as the LM317, with all the associated circuitry required to perform these same functions.
Sadly, the days of inexpensive PCBs from China are over for US citizens – you all know why so we need not discuss that. The prices from China still beat the prices from US sources in most cases, but even then, there is uncertainty in what the real cost may be with the fluctuating rule changes...
The holiday season is a time of giving, and what better way to show your true love that you care than with the “12 Days of Christmas” gifts? This classic holiday song has inspired a fun way to ...