All Entries in the "Circuits" Category
Fake Car Alarm Circuit – 555 led Flash
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, [...]
Simple Circuit – Stereo audio amplifier using IC LM386 – 2 x 500 mW – Includes PCB and Power Supply
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 [...]
Circuit Stereo Preamplifier With IC TDA1524A – Tone Control Unit – Bass Treble volume control, channel balance and loudness contour
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 [...]
Circuit Adjustable Symmetrical Power Supply Using negative and positive Regulator IC’s LM317 and LM337 / +- 1.2 at 30 Volts
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 [...]
Download New Cadsoft Eagle 6.1 – The popular Cad PCB Software for Windows Mac and Linux
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 [...]
Circuit Audio Power Amplifier with Subwoofer – Mount Bridge – Using Ne5532 and 4 TDA2030 – 2 x 18 Watts stereo + 30 W sub
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 [...]
Circuit Mini transmitter video assembly instructions – 1 transistor FM transmitter
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 [...]
How make a wooden FM Transmitter – Circuit FM transmitter mount unusual – a piece of wood – No pcb and solder
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 [...]
Circuit power amplifier stereo audio chip lm1875 – 2 x 20 watt and power supply circuit
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 [...]
TV remote control Blocker Circuit – IR Remote Control Jammer – using Ic 555 and IR Leds
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 [...]
