In this post I have explained the construction of a homemade 10 watt LED lamp using ready made 12 V SMPS adapter. The project was successfully built by Mr. Debabrata Mandal. In many of previous posts I have discussed the use of 1 watt white LEDs for making high efficiency LED lamps for implementing in […]
Newly Updated Circuit Projects:
How to Compare IGBTs with MOSFETs
In this post I have explained the main differences between an IGBT and a MOSFeT device. I have explained more about the facts from the following article. Comparing IGTB with power MOSFETs The insulated-gate bipolar transistor features a voltage drop which is significantly low when compared to a conventional MOSFET in the devices which have […]
Bipolar Transistor Pin Identifier Circuit
In the proposed BJT pin identifier circuit when the circuit is switched on, two jumpers will have both LEDs ON and the third will have only one LED illuminated. Investigated, Modified and Written By Abu-Hafss The E-B-C, NPN/PNP Detector Concept The jumper with one LED ON is connected to BASE. If it is red LED, […]
Induction Heater Circuit Using IGBT (Tested)
In this post I will comprehensively discuss how to build a high power 1000 watt induction heater circuit using IGBTs which are considered to be the most versatile and powerful switching devices, even superior to mosfets. Induction Heater Working Principle The principle on which induction heating works is very simple to understand. A magnetic field […]
Lamp Outage Detector Circuit for Car Turn Signal
The O.E.M. turn signal flashing units installed in automobiles have two basic functions i.e. Flasher and Lamp outage detection. These flashers are usually built with an 8-pin IC like U2044B, U6432B etc. which are specifically made for automotive flashers. Designed and Written By Abu-Hafss Circuit Operation NORMAL OPERATION: -input = Square wave between 11.89V – […]
TSOP1738 Infrared Sensor IC Datasheet, Pinout, Working
Video showing the Testing of TSOP1738 with 38 kHz Frequency The TSOP17XX series of ICs are infrared sensor devices designed for sensing infrared frequencies only with a specific range of modulated frequency, and interpreting them into a proportionate magnitude of electrical pulses at the output. This is specifically done to make the sensor immune to […]