This simple bridge circuit can be used for impedance or resistance measurement using a high impedance earphone as an indicator. The circuit is from an American 80's documentation.
This squelch circuit is placed at the input of the single receiver audio amplifier stage. Its...
November 2016 - New mCube MC3635 3-axis accelerometers with I2C and SPI interfaces in 1 to 16 g...
This circuit was obtained from Radio Electronics from the 90s. The infrared sensor is of an...