In this post we are going to construct an Mp3 player using arduino and DFPlayer. The proposed article has two Mp3 player designs, one with push button control and another one with IR remote control. We will also take a look at DFPlayer (Mp3 player module) and its specifications. By Arduino Guru We all love … Read moreMp3 Player Using DFPlayer – Full Design Details
This is a universal 4 channel DJ audio mixer project that may be customized and upgraded to 5 channel or even 10 channel level as desired by the user. 5 Stage DJ Mixer Five stages are employed within the layout; DJ mixer stage; Mono headphone amplifier stage; Balanced-microphone preamplifier stage; Stereo VU circuit stage, and … Read more4 Channel DJ Audio Mixer Circuit for Discotheques Applications
In this post we learn about a simple Hi-Fi balanced microphone preamplifier circuit and also evaluate the calculations, specifications of the design through formulas. What is a Balanced Preamplifier A “balanced” amplifier or differential amplifier possesses not one but two distinct inputs and only the difference amongst these inputs is actually amplified. To elucidate just … Read moreBuild this Balanced Microphone Preamplifier Circuit
The explained gainclone 60 watt stereo amplifier circuit is capable of producing an excellent sound quality, using a single IC LM3875. The IC is manufactured by Texas Instruments and can be expected to produce a good 60 watts of power output on a 8 Ohm speaker. General Features of the LM3875 The general features of … Read more60 Watt Stereo Amplifier using Gainclone Concept
In this post we learn how to make a 10 step sequentially switching latch circuit which is used for switching ON 10 high power amplifiers sequentially. The idea was requested by Mr. Jerry B. Williams Circuit to Switch ON Power Amplifiers in Sequence Circuit Objectives and Requirements My circuit question will be more detailed than … Read more10 Stage Sequential Latch Switch Circuit
The post discusses a buzzer circuit with an incrementing beeping rate, which can be used in critical warning signalling applications. The idea was requested by Mr. Lee. Buzzer with Progressive Beep Rate Could you help me with a circuit. I’ve been trying to find but so far had no luck! I need a pulsing piezo … Read moreBuzzer with Incrementing Beep Rate