SA1021 FM RADIO RECEIVER FOR PORTABLE SYSTEM
#FM receiver
#radio
#portable
#SA1021
#RF
#communication
#wireless
#audio
#signal processing
#electronics
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Audio VU Meter using Arduino
It is advisable to modify inexpensive USB speakers to obtain a pre-assembled analog front-end for this project. If this is not feasible, then soldering will be necessary, requiring a minimum of two resistors and one capacitor, assuming the display is...
Amplifier Stages
The XLR or Cannon-type connector is a superior audio connector compared to a 6.5mm jack plug and socket. However, tradition mandates the use of the 6.5mm socket, despite its significant connection issues. Inputs can vary from a single socket directly...
RF Dummy load
The load described here is capable of handling up to 10 watts of RF power for a couple of minutes and is designed for the widely used 50 ohms impedance. It consists of ten parallel connected 560 ohms 1 watt...
FM receivers with PLL
This article discusses simple FM direct conversion radio receivers utilizing a phase-locked loop (PLL). These receivers operate by locking the local oscillator frequency to the input signal. All FM receivers are based on a circuit that combines an oscillator and...
Power AmplifierCircuit and Schematics for 25 Watts-IC TDA2009
Power amplifier circuit diagram with schematics. This simple audio power amplifier circuit is designed for 25 watts output power using TDA 2009 IC, which has two channels (stereo), 12.5 W for each channel.
The described power amplifier circuit utilizes the TDA...
FM reciever with classic TDA7000
With the P1 we regulate the intensity of sound. With the P2 we regulate the frequency of reception. Optionally: If you want to check the frequency with your PC it will be supposed you make the following energies: You assemble...
stereo
This audio amplifier design utilizes two LM3886 chips per channel in a parallel configuration, based on the PA100 parallel amplifier detailed in National Semiconductor's application note AN1192. The amplifier can deliver approximately 50W into an 8-ohm speaker and 100W into...
A Simple Audio Oscillator
A simple oscillator that can be utilized for code practice. To achieve adequate inductance for generating an audio frequency, an iron core transformer, similar to those employed in audio transformer-coupled amplifiers, is connected as illustrated.
The circuit comprises a basic oscillator...
2W audio power amplifier LM380 circuit
This document details a 2W audio power amplifier circuit that utilizes a 14-pin LM380 package as the amplification element. The input signal is managed by a volume control potentiometer (Rp) rated at 20k ohms, with a coupling capacitance of 22...