http://xtronic.org Transmitter power amplifier schematic electronics stereo circuit diagram, schematic power supply circuit Mon, 30 Apr 2012 05:33:47 +0000 en hourly 1 http://xtronic.org/circuit/fake-car-alarm-circuit-555-led-flash/ http://xtronic.org/circuit/fake-car-alarm-circuit-555-led-flash/#comments Tue, 17 Apr 2012 16:00:26 +0000 Toni http://xtronic.org/?p=1675 Simple circuit simulator false alarm for cars or home, based on an integrated circuit timer 555, just to simulate the existence of an alarm in your car. Using an LED to simulate that “little light” that flashes indicating that the car alarm is activated. the circuit is based on the 555, mounted as astable oscillator, [...]

]]> http://xtronic.org/circuit/fake-car-alarm-circuit-555-led-flash/feed/ 0 http://xtronic.org/circuit/amplifier/stereo-audio-amplifier-using-ic-lm386/ http://xtronic.org/circuit/amplifier/stereo-audio-amplifier-using-ic-lm386/#comments Tue, 17 Apr 2012 04:31:52 +0000 Toni http://xtronic.org/?p=1682 This is an audio amplifier using two National Semiconductor LM386 (Texas Instruments). Basically this involves the use of two amplifiers as posted on another item with a time ago. However this time includes the printed circuit board for stereo version, and power supply. The circuit operates power supply or batteries 6-12 volts. The yield is [...]

]]> http://xtronic.org/circuit/amplifier/stereo-audio-amplifier-using-ic-lm386/feed/ 0 http://xtronic.org/circuit/amplifier/stereo-preamplifier-tone-control-bass-treble-balance-loudness-volume/ http://xtronic.org/circuit/amplifier/stereo-preamplifier-tone-control-bass-treble-balance-loudness-volume/#comments Wed, 28 Mar 2012 06:30:02 +0000 Toni http://xtronic.org/?p=1639 Stereo preamplifier circuit based on the Integrated Circuit TDA1524A. Contains components for amplification and pre Tone controlling. The signal processing is done by the voltage controlled TDA1524A. This manufactured by Philips IC (NXP) Semiconductors, allows for tone control voltage and can be used in more complex designs using microcontrollers. Here we use linear potentiometers to control [...]

]]> http://xtronic.org/circuit/amplifier/stereo-preamplifier-tone-control-bass-treble-balance-loudness-volume/feed/ 0 http://xtronic.org/circuit/adjustable-symmetrical-power-supply-using-lm317-lm337/ http://xtronic.org/circuit/adjustable-symmetrical-power-supply-using-lm317-lm337/#comments Fri, 23 Mar 2012 06:07:23 +0000 Toni http://xtronic.org/?p=1609 The circuit will serve as a voltage converter with an input voltage of 35 V to produce an output voltage of 1.25 V to 30 V. The positive voltage is being handled by LM317 IC while the negative voltage is handled by LM337. The circuit can provide an output current of 1 A. During the [...]

]]> http://xtronic.org/circuit/adjustable-symmetrical-power-supply-using-lm317-lm337/feed/ 0 http://xtronic.org/circuit/new-cadsoft-eagle-6-1-pcb-cad/ http://xtronic.org/circuit/new-cadsoft-eagle-6-1-pcb-cad/#comments Tue, 20 Mar 2012 06:07:10 +0000 Toni http://xtronic.org/?p=1601 EAGLE Version 6.1 is a bugfix-release. Besides fixing the CAM-problem of version 6.0 further optimizations were carried out. Release notes for EAGLE 6.1.0 DIMENSION command: Added a note about the settings for dimension objects to the online help of the DIMENSION command. Miscellaneous: The new option “Legacy mouse wheel mode” in “Options/User interface” can be [...]

]]> http://xtronic.org/circuit/new-cadsoft-eagle-6-1-pcb-cad/feed/ 0 http://xtronic.org/circuit/amplifier/audio-power-amplifier-subwoofer-ne5532-tda2030/ http://xtronic.org/circuit/amplifier/audio-power-amplifier-subwoofer-ne5532-tda2030/#comments Fri, 16 Mar 2012 05:42:21 +0000 Toni http://xtronic.org/?p=1577 This circuit is typical of systems sold for 2.1 PC surround systems, left and right channel and subwoofer. Just plugging in the stereo audio and adjust the volume Audio amplifier circuit using integrated TDA2030 and op amp Ne5532, has two stereo amplifier left and right satellite and Bass amplifier using TDA2030 in bridge for more [...]

]]> http://xtronic.org/circuit/amplifier/audio-power-amplifier-subwoofer-ne5532-tda2030/feed/ 2 http://xtronic.org/circuit/audio/circuit-mini-transmitter-video-assembly-instructions/ http://xtronic.org/circuit/audio/circuit-mini-transmitter-video-assembly-instructions/#comments Sat, 21 Jan 2012 05:42:27 +0000 Toni http://xtronic.org/?p=1570 Instructions, how to build a mini station from cheapest simplest components. Either frequency, modulation, FM (frequency modulation), sends the component values ​​at around 100 MHz Mini Transmitter Instruction Building a super spy bug transmitter. The 20k resistors together with the resistance of the condenser microphone sets a voltage divider composed of the (dc) operating point [...]

]]> http://xtronic.org/circuit/audio/circuit-mini-transmitter-video-assembly-instructions/feed/ 0 http://xtronic.org/circuit/audio/wood-fm-transmitter-unusual-mount-pcb-free/ http://xtronic.org/circuit/audio/wood-fm-transmitter-unusual-mount-pcb-free/#comments Thu, 19 Jan 2012 23:19:03 +0000 Toni http://xtronic.org/?p=1565 In this video we are showing you how to make a FM transmitter Bug using 2 transistors and a wood circuit board. The reason for author make FM transmitter this from wood is because  people that can not make there own circuit boards ,can not solder or can not find the capacitor trimmer for adjusting [...]

]]> http://xtronic.org/circuit/audio/wood-fm-transmitter-unusual-mount-pcb-free/feed/ 3 http://xtronic.org/circuit/amplifier/circuit-power-amplifier-stereo-audio-chip-lm1875-20-watt-power-supply/ http://xtronic.org/circuit/amplifier/circuit-power-amplifier-stereo-audio-chip-lm1875-20-watt-power-supply/#comments Sat, 17 Dec 2011 04:57:07 +0000 Toni http://xtronic.org/?p=1556 This is an audio amplifier circuit using integrated LM1875 stereo to 2 x 20 Watts. With power supply for ease of assembly for any hobbyist. With a power of up to 20 Watts stereo amplifier that is suitable for use as power audio amplifier in various applications such as power amplifier for PC audio, FM [...]

]]> http://xtronic.org/circuit/amplifier/circuit-power-amplifier-stereo-audio-chip-lm1875-20-watt-power-supply/feed/ 2 http://xtronic.org/circuit/tv-remote-control-blocker-circuit-ir-jammer/ http://xtronic.org/circuit/tv-remote-control-blocker-circuit-ir-jammer/#comments Tue, 29 Nov 2011 03:32:06 +0000 Toni http://xtronic.org/?p=1546 Just point this small device at the TV and the remote gets jammed . The circuit is self explanatory . 555 is wired as an astable multivibrator for a frequency of nearly 38 kHz. This is the frequency at which most of the modern TVs receive the IR beam . The transistor acts as a [...]

]]> http://xtronic.org/circuit/tv-remote-control-blocker-circuit-ir-jammer/feed/ 0 http://xtronic.org/circuit/amplifier/power-audio-amplifier-tda7293-dmos/ http://xtronic.org/circuit/amplifier/power-audio-amplifier-tda7293-dmos/#comments Thu, 10 Nov 2011 04:55:56 +0000 Toni http://xtronic.org/?p=1514 Power amplifier using the TDA7293 chip manufactured by ST Microelectronics, includes schematic and pcb design for easy mounting of the power amplifier. The TDA7293 is a monolithic integrated circuit in Multiwatt15 package, intended for use as audio class AB amplifier in Hi-Fi field applications (Home Stereo, self powered loudspeakers, Top-class TV). Thanks to the wide [...]

]]> http://xtronic.org/circuit/amplifier/power-audio-amplifier-tda7293-dmos/feed/ 5 http://xtronic.org/circuit/audio/circuit-of-stereo-fm-transmitter-hi-fi-with-ic-ba1404-power-stage/ http://xtronic.org/circuit/audio/circuit-of-stereo-fm-transmitter-hi-fi-with-ic-ba1404-power-stage/#comments Sat, 15 Oct 2011 06:46:16 +0000 Toni http://xtronic.org/?p=1489 With this circuit you will be able to mount a mini stereo FM station and broadcast to your entire home, a simple way to have an audio link wireless with ease. With the FM transmitter BA1404 Hifi Stereo you can stream your music from your iPod MP3, satellite receiver, computer, DVD player, Mobile Phone, MP4 [...]

]]> http://xtronic.org/circuit/audio/circuit-of-stereo-fm-transmitter-hi-fi-with-ic-ba1404-power-stage/feed/ 2 http://xtronic.org/circuit/circuit-audio-pre-amplifier-integrated-circuit-lm358-dual-op-amp/ http://xtronic.org/circuit/circuit-audio-pre-amplifier-integrated-circuit-lm358-dual-op-amp/#comments Sat, 24 Sep 2011 04:04:47 +0000 Toni http://xtronic.org/?p=1465 LM358 Low Power Dual Operational Amplifiers General Description The LM358 series consists of two independent, high gain, internally frequency compensated operational amplifiers which were designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible and the low power supply current drain is [...]

]]> http://xtronic.org/circuit/circuit-audio-pre-amplifier-integrated-circuit-lm358-dual-op-amp/feed/ 0 http://xtronic.org/circuit/amplifier/download-collection-of-circuits-tubes-audio-amplifiers/ http://xtronic.org/circuit/amplifier/download-collection-of-circuits-tubes-audio-amplifiers/#comments Sat, 17 Sep 2011 02:51:03 +0000 Toni http://xtronic.org/?p=1454 This is a PDF in English published in 1947 and features 45 complete schemes of tube amps, including diagram drawing material list and description of operation. Ideal for anyone interested in old amplifiers (Vintage) and the supporters as well as a modern valve amplifier. The power of the circuits presented in the book ranges from [...]

]]> http://xtronic.org/circuit/amplifier/download-collection-of-circuits-tubes-audio-amplifiers/feed/ 2 http://xtronic.org/circuit/amplifier/circuit-audio-preamplifier-bc549-transistor-pcbs-volume-control/ http://xtronic.org/circuit/amplifier/circuit-audio-preamplifier-bc549-transistor-pcbs-volume-control/#comments Tue, 23 Aug 2011 22:36:37 +0000 Toni http://xtronic.org/?p=1446 This simple circuit can be used to boost the signal sources that are not able to excite your amplifier, or from entering your PC, such as microphones for low and medium impedance, sound-heads, guitar pickups, guitar, etc.. The circuit is very simple and compact and can even be installed inside the signal source, should be [...]

]]> http://xtronic.org/circuit/amplifier/circuit-audio-preamplifier-bc549-transistor-pcbs-volume-control/feed/ 0