Free electronic circuit design and schematic diagram
Variable-gain amplifiers (VGAs) can be used in may types of systems, such as radio receivers. In this system, the input signal voltage depends on an uncontrolled variable, such as distance to the transmitter. To ensure that the input signal amplitude matches the input voltage range of key components, such as ADCs and DACs, thereby maximizing the converter’s dynamic range, VGA […]
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The X9314 with the low voltage LM386 power amplifier is shown on figure below. 250mW of audio power will be produced by this circuit with only a 5V DC source. Plenty of sound for intercom, communications, or monitoring applications will be provided by this circuit. It’s require a 74HC132 quad Schmidt NAND gate (U2) plus a few discrete components to […]
Read moreThis is a transistor video tutorial. This video describes about transistor and how it works. Transistor can be used as amplifier or switch. There are many kinds of transistor, in this video bi-polar transistor is described. There are two kinds of bi-polar transistor, NPN and PNP. Bi-polar transistor has three layer, they are input layer, control layer and output layer. […]
Read moreThis is how to test a diode video tutorial. This video shows how to test diode using multimeter. First, put the positive probe of multimeter on anode and negative probe on the cathode, then check the value on multimeter. After that, put the positive probe of multimeter on cathode and negative probe on anode, then check the value shown on […]
Read moreThis is video tutorial about how to test high voltage diodes. This video shows step by step how to test high voltage diodes. Arrange the diode like the schematic in this video. Connect DC power supply on the input. If the voltage is 6V to 10V the diode is good and connected in the right direction. If the voltage is […]
Read moreThis is video about diodes in circuits and testing them. In this video, the diodes is tested in two ways, using simple circuit and using multimeter. The diodes in this video is configured in two ways, forward bias and reverse bias. In the forward bias configuration, the diodes allow the current through them, and in the reverse configuration, the diodes […]
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Try to imagine the possibilities to integrate full audio tone, balance, and volume control into your multimedia computer product, and you integrate it without having to resort to any manual knobs. Naturally we could integrate it with a bunch of DACs all running under microprocessor control, but what happens if the processor has had a chance to reload the preset […]
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