All Entries in the "Circuits" Category
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 [...]
Circuit power Audio Amplifier Mono With DMOS IC (MOSFET) TDA7293 to 100 watts stand-by mute
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 [...]
Circuit of stereo FM transmitter Hi-Fi with IC BA1404 with power stage
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 [...]
Circuit audio pre-amplifier – integrated circuit LM358 dual op amp
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 [...]
Download collection of circuits Tubes Audio power Amplifiers
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 [...]
Circuit audio preamplifier with a BC549 transistor – including PCBs and volume control
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 [...]
Circuit Power Supply regulated 7.5A @ 1.2 to 25Volts – Low Dropout Positive Adjustable Regulators LT1083
The LT1083 series of positive adjustable regulators are designed to provide 7.5A with higher efficiency than currently available devices. All internal circuitry is designed to operate down to 1V input-to-output differential and the dropout voltage is fully specifi ed as a function of load current. Dropout is guaranteed at a maximum of 1.5V at maximum [...]
