.. R1, R3, R5, D2, and TEST pushbutton S3 comprise the simple current limit circuit (R4 is a parasitic Q-killer). S3 supplies power to S1, the polarity reversal switch, and S2 selects the measurement. J1 and J2 are banana jacks for the DMM set ...
.. classic nonlinear analog function is the squaring circuit. It’s useful in power sensing, frequency multiplication, RMS computation, and many other odd jobs around the lab bench. Figure 1. The ...
.. prototyping. This simple circuit can prevent hours of rework caused by momentary lapses of concentration when an incorrect power supply is applied to a circuit. Introduction The good thing about being a field applications engineer is that ...
.. isolated AC-to-DC flyback converter is the most commonly used power supply type for home and industrial devices. Fear of the main voltage and complexity of calculations cause ...
Generating ozone and negative ions in the air can be done by a corona discharge. For this we can use a sharp tip of negative polarity, acting against a flat metal part of positive or neutral potential. The device generates negative air ions and ...
.. It consists of several parts which I explain one by one. Figure 1. Schematic diagram of the digital FM transmitter project. Power supply P2 is an XH connector to apply power to the board. The input voltage could be something between 7-9 VDC. ...
.. anti-overheating features. Some are very good, like “Improve the accuracy of programmable LM317 and LM337-based power sources” ( Ref. 1 ). Others perhaps not so much “Cross-connect complementary current sources to ...
.. low-distortion, monolithic instrumentation amplifier. R2 and R3 provide a current path for a conventional 48 V phantom power source for a remotely located microphone. A slide switch SW1 allows phantom power to be disabled. C6 and C8 ...