While constructing circuits on Bread board, sometimes we need a well regulated power supply. For this, we use Voltage Regulator IC. But, its needs some components and take some space in the bread board. For an easy project making, we can make a Permanent Regulated power supply board that can be hooked in the bread board. The power supply board has a 3 pin socket, so any Voltage regulator of the 78XX series can be connected in it. The power supply board has noise and transient filtering capacitors, a buffer capacitor and input and output indicators. So by plugging the power supply board in the bread board, we save time and save much space in the bread board for the circuit assembly. Easy project building makes the circuit perfect. Continue reading →
Hacked my Laptop battery and charger to make a Portable power supply. My old Laptop was irreparably damaged leaving only a good battery. It is a high performance 12 volt Lithium Ion rechargeable battery that can backup more than 2 hours a laptop and many hours for circuit boards and LED lights. So I made a Portable power supply using the battery. So don’t discard the battery and charger if your Laptop fails permanently. Both battery and the charger costs around Rs. 2000.It can be utilized for making a Power supply or LED lamp. So it is the good power supply I ever made because it is running on battery and output is fully regulated. Continue reading →
Most of the CMOS circuits need a well regulated power supply for proper working. Regulated power supply is the DC source that gives constant Voltage and Current in its output irrespective of the input changes. Various types of power regulation methods are available which depends on the use and type of the circuit. Here explains three Regulated power supply designs. Continue reading →
The handy low cost 433 MHz Transmitter and Receiver pair is now widely used in Arduino based circuits. But one of the serious problems with the Receiver is its inherent property of accepting lot of noise from the background. This gives erratic output data which causes error reading. If the output is connected to an audio amplifier, hissing sound appears in the speaker when the receiver is in standby without receiving the signals from the transmitter. So careful designing of the power supply and a Glitch removing circuit will considerably reduce the noise from the data out of Receiver (Rx).