Author Archives: obaid1470

 This was my first arduino project; it was really a very big success for me in the field of electronics, Actually many guys did not have any idea to develop any best microcontroller based project, because they confused to decide which microcontroller to be used which programmer to used, also they confused about the programmerContinue reading “Arduino UNO simple experiments”

FM transmitter having a stable frequency & with a high power (Range) is a tough task to do , actually you can buy a high power FM transmitter , but hard to make it due to the restriction as well as parts availability in the certain areas , in my this circuit the input wereContinue reading “FM Transmitter circuit”

Below mention transmitter is very simple to assembled , which is consist of only 2 transistors  ( 2SC2407 & 2 SC3950 )  having a stable frequency & with a high power (Range) is a tough task to do , actually you can buy a high power FM transmitter , but hard to make it dueContinue reading “FM Transmitter 1 Watt ( 88 MHz – 108 MHz)”

One of my friend demanded to design such a project where there is two different DC power supply ,we need to have un interrupted output , this circuit is designed around 48 Vdc , both power supply input mentioned in the circuit are 48v-1 & 48v-3, both voltages were then combined by the diode  D1Continue reading “DC TO DC UNINTERRUPTIBLE POWER SUPPLY (48 V DC )”

In this project i will introduce a full duplex radio communication from  FM / MW / SW Radio.For this we will use two radio sets ,( Digital or Analog Radio set ) just keep two radio sets near each other , tune one of the radio having same band you will observe that both radiosContinue reading “FM / MW / SW Radio as Tri-band Transceiver ( full duplex transmission )”

  High voltage DC conversion to a low level is tough task , but it is not that difficult task so  this circuit is consist of Transistor based DC voltage  down converter circuit , here a power full transistor TIP35C were used , a smal network of resistor 4.7k , 100R 5W , Zener diode 12V, capacitor 220ufContinue reading “48 V DC to 5 V DC Converter circuit”

Any person want a best metal detector he should try to make this detector , but if you want to buy this detector you have to spend to much amount for it , but having a good skill in circuit assembling you can enjoy this versatile detector , i have made this circuit about 5Continue reading “Delta Pulse 2 Metal Detector”

Some time timer circuits  required for some sort of delay while designing a project  but on a low  voltages we have to design such a special circuits which can even work by taking power from even mobile battery ,the IC 4001 is the best choice for it , even up to 4 timer can beContinue reading “DELAY OFF TIMER ( 3vdc to 5vdc )”

Here is a simple sound activated circuit assemble this circuit the transistor is directly driven from the speaker output , a capacitor connected with a relay in parallel to avoid some small gape ( intervals)  connect it with your mobile phone ring output ,save a continuous tone (beep) in your mobile , set this tone forContinue reading “Sound activated switch circuit ON/OFF”

For any electronic circuit assembling it required a PCB board ,it may be bread board, dotted board or special PCB board which you have to design and then printedYou need to have a laser printer with a maximum DPI ,for clear print , for paper search for shiny surface like used in monthly magazine wouldContinue reading “homemade pcb making”