This below circuit is a easy handsfree telephone receiver system. This doesn’t have dialing circuit so, it’s not a total phone replacement circuit, but it’s just only a loudspeaker system […]
Capture RF energy from environment by using a stick antenna
There are a lot of RF energy(unused) in our environment, by TV , radio channels, etc. We can capture energy of any wave by tuning same frequency resonating coil, but […]
The Simplest TV transmitter ever made
We have earlier discussed how to make the simplest FM transmitter, now it’s time to make a TV transmitter. We can broadcast our DVD playbacks, etc to our neighborhood area […]
Simple 10 Rupees microphone for PC, Skype, VoIP
With addition to a webcam in a PC, it is required to have a mic also. If we have headset cum mic, then no problem, but if we don’t? Well, […]
TDA2030A Amplifier Circuit used in home theaters
TDA2030A or TDA2030 is a well used class AB audio amplifier IC. TDA2030A amplifier circuit is mostly used in nowadays home theatre systems for it’s some good features. Small size IC(package […]
Router UPS setup, battery in your ADSL modem or router
This router ups setup diagram, not an circuit diagram. It’s about a circuit that keeps your WiFi router or Broadband modem always on even in power cuts so that we can […]
Winner of the 4GB pendrive giveaway contest.
Todays 15th March and the winner of the recent contest has been selected by a random pickup from list of contestants. The contestants who have blogged about this contest, had […]
An easy to make voltage coupler(2X) circuit, for mini projects
This below circuit is very useful for our mini projects. To do mini projects we often need power supply of 3V, 6V, 12V etc. But a general 3-0-3 step down […]
Solar to 6V Batt to LED emergency light circuit
Today we discuss about a simple solar LED circuit. We know that solar panels comes from 12Volt 3watt to larger sizes. So, for storing energy, we need a 12Volt battery. […]
How to save solder wire
We use a lot of solder for doing our projects, repair jobs, etc. But when we think simply that we replaced a part/component, we use new solder wire to solder […]
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