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.
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...
DesignerDan submitted a new article: Simple, inexpensive vehicle immobilizer - This vehicle immobilizer circuit is quite possibly the smallest, simplest, cheapest and easiest to This vehicle immobilizer circuit is quite possibly the smallest, simplest, cheapest and easiest to make, install...
Here's the first of two simple PWM control circuit using inexpensive readily-available components. The circuit component values shown are for a 12V supply but could be altered for other supply voltages less than 15V. Most of the work is done by...
Naperville resident Melissa Ladin owns Innovative Interior Designs, a local home-based design/build firm that opened in 2004. What sets you apart from similar businesses? Innovative Interior Designs ...
Twitter has been testing designs furiously all winter, including a tile-like format for tweets and a Facebook-style profile page on the web. But TNW has spotted an update in the Twitter app (which is ...
Instagram says it is testing new layout designs for user profiles over the next few weeks that will make them easier to use and better at helping people connect with each other on the social network.