Electronic Projects   |   Store   |   Schematics   |   Downloads   |   Search  

Circuit-Zone.com - Electronic Projects



76-110MHz FM Radio Transmitter
Posted on Tuesday, December 30, 2014   •   Category: FM Transmitters


Here is a simple 76-110MHz FM transmitter that can transmit your voice or audio over an ordinary FM radio within the FM broadcast band. It can transmit both voice using microphone and music from any music player. Frequency is changed by adjusting 5.5 turn inductor coil. Transmitter is powered by 9V battery or 3V-9V power adapter. Transmission range is 100 meters but can be increased with better antenna or RF amplifier.


Super Simple FM Transmitter
Posted on Wednesday, December 10, 2014   •   Category: FM Transmitters


FM transmitters can be complicated to build, but not this one. Itís about the easiest you can possibly make. And though the science of radio is well understood, thereís a magical, emotional quality about it that we donít often stop to appreciate. You will not forget the first time you pick up a transmission broadcast from a device you soldered together, yourself, from a few bits of copper, carbon, plastic, and wire.


Driving CDROM Stepper Motor with Arduino
Posted on Saturday, October 25, 2014   •   Category: Stepper Motors


H-bridge is frequently used to control DC motors and stepper motors. When controlling a bipolar stepper motor, two full H-bridges are needed. There are many H-bridge ICs (like L298, MPC17529 and SN754410 which is a quad half H-bridge) for just that purpose. But if you are on a budget, you may want to consider building a dual H-bridge yourself. The following schematic shows a simple dual H-bridge using eight general purpose transistors (2N3904 and 2N3906). Given the maximum current of roughly 200mA, this circuit can be used to drive a small bipolar stepper motor operating between 5V and 12V, such as the stepper motors found in most floppy drives and CD / DVD drives.


6W FM Transmitter 88-108 MHz
Posted on Tuesday, August 26, 2014   •   Category: FM Transmitters


Presented FM transmitter is built around low power PLL transmitter and amplifier that boosts its signal all the way up to 6 Watts. The signal is amplified by three RF stages of amplification. In the first and second stages of the transmitter one of the best driver transistors were used 2SC2053. You can use the other transistors but only up to 500mW of power. In the third stage 2SC1971 RF transistor was used to achieve 6W of power. For making any RF transmitter circuit at least two meters are necessary, one is frequency counter and the other is RF field strength meter for which the schematic is provided.


Battery Powered Amplifier
Posted on Friday, August 22, 2014   •   Category: Amplifiers


This is battery powered amplifier based on LM386 chip and has an input buffer that is feeding the inverting input. The input buffer helps to retain treble details going into the LM386 chip. It is powered from a single 9V battery.


Page 8 of 150:   1   2   3   4   5   6   7   8   9   10   11   12   13   14   15   16   17   18   19   20   21   22   23   24   25   26   27   28   29   30   31   32   33   34   35   36   37   38   39   40   41   42   43   44   45   46   47   48   49   50   51   52   53   54   55   56   57   58   59   60   61   62   63   64   65   66   67   68   69   70   71   72   73   74   75   76   77   78   79   80   81   82   83   84   85   86   87   88   89   90   91   92   93   94   95   96   97   98   99   100   101   102   103   104   105   106   107   108   109   110   111   112   113   114   115   116   117   118   119   120   121   122   123   124   125   126   127   128   129   130   131   132   133   134   135   136   137   138   139   140   141   142   143   144   145   146   147   148   149   150

Circuit-Zone.com © 2017. All Rights Reserved.
AC / DC Innveters
AM Radio
Amplifiers
Antennas
Arduino
Audio Attenuators
Audio DAC
AVR
Battery Chargers
CNC Milling Devices
Counters / Frequency Meters
Fluorescent Lamps
FM Radio / Receivers
FM Transmitters
Frequency Wave Generators
Headphone Amplifiers
iPOD Hacks
LC Meter
LED
Miscellaneous
Motor Controllers
MP3 Players
Oscillators
Oscilloscopes
PC Circuits
PCB
Phone Circuits
PIC
PLL Circuits
Power Supplies
RC Servo Motors
Remote Control
RF Radio Frequency
Robots
Sensors
Solar Circuits
Stepper Motors
Stereo Encoders
Test and Measurement
Timer Circuits
TV Transmitters
USB Circuts
USB Interface Adapters
USB Soundcards / USB Headphones
Video
Volume Control