This simple PIC-based unit was designed to measure and display the values of inductors and capacitors.
As a by-product of the technique used, it can also display the frequency of an external 0V / +5V signal source.
Capacitance: 1pF to 6500mF
Inductance : 1mH to 10H
Frequency : 0,05Hz to 5MHz

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32Watt Hi - Fi audio power amplifier TDA2050


The TDA 2050 is a monolithic integrated circuit in Pentawatt package, intended for use as an audio class AB audio amplifier. Thanks to its high power capability the TDA2050 is able to provide up to 35W true rms power into 4 ohm load @ THD = 10%, VS = ±18V, f = 1KHz and up to 32W into 8ohm load@ THD = 10%, VS = ±22V, f = 1KHz.
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120W MOSFET Power Amplifier with LM4702 Driver Chip

120W MOSFET Power Amplifier with LM4702 Driver Chip
National Semiconductor has been fast at work designing analog products for the high-end audiophile market. As for­tune would have it, these products such as the LM4780 Power Amplifier Chip and the LM4702 Driver Chip are easy to implement into high-quality designs for the audio DIYer.
National recently introduced the LM4702, a high-voltage driver chip that interfaces bipolar or MOSFET output devices. The LM4702 provides two small signal, input stages and voltage amplifica­tion stages (VAS). All you need to do is design a suitable bias system and output stage.
Not to be outdone in making the job easy for us amateurs, National provides a comprehensive design outline, guide to printed circuit board construction, ideas for the power supply, bill of materials, and suggested layout. In an application note dated May 20061, the company de­scribed an amplifier using high-qual­ity construction techniques and off-the-shelf passive components. The result is an amplifier with a vanishingly low level of distortion, 0.0006%. See More...

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