Level shift and voltage conversion in the power supply system are two different function chips. The level shift is for the signal line level. For example, the GPIO port of the MCU has a working voltage of 3.3V, and the GPIO of the...
This article takes RS393 as an example to explain how to apply the window comparison circuit to the lithium battery charging temperature control circuit. Analyze the working principle of the window comparator and the calculation i...
Level shifter and voltage shifter are two different function chips in the system. The level shifter is based on the signal level. For example, the GPIO port of the MCU has a working voltage of 3.3V, and the GPIO of ...
Hand held infrared thermometer detector is a kind of non-contact, near field human temperature detector which is popular used in many temporary and fast temperature detective needed places. With the developing of...
The Household portable Finger clip oximeter is highly flexible ,can quickly measure the percentage of human blood oxygen saturation (SpO2 ) and pulse rate on the basis of non-injury.Has won wid...
The portable Electronic Blood-Pressure Meter gets rid of the traditional Mercury Blood-Pressure Meter, is easier for the user to use, and the measurement result is displayed directly. The usual way is to use oscillographic meth...
Operational amplifier and comparator The electrical symbols of the comparator and the operational amplifier are very similar. They are devices with two input term...
The noise-cancelling headphones, speakers, KVM, matrix, mixers, etc often require to process multiple audio signals. Designing a set of conditioning circuit for each audio signal will be very expensive and very complicated. The...
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