The TA2003P is a highly integrated AM/FM radio receiver IC, very close to CD2003GP. You can find TA2003P datasheet, pinout and other details here. Features Uses fewer external components. No need for FM IFT, AM IFT, and FM detector coil Adjustment free for FM detector circuit Wide operating supply voltage range, 1.8V to 7V […]
Author Archives: Arnab
Reference Design – High power adjustable LED driver with MAX16835
MAX16835 is a current regulated high power LED driver. It can take a wide range of input voltage, also supports dimming via a PWM signal. This IC is designed and sold by Maxim Integrated, specially for rugged applications. MAX16835 can be used to drive a single LED or a string of multiple LEDs in series, […]
MOSFET based delay timer ciruit
Sometime we may need to turn off or turn on a device after some time. That’s when timer circuits are useful. Here we’re going to talk about simple MOSFET timer circuits. You can determine the delay of this timer circuits by calculating the RC constant, but they’re very unpredictable. In fact RC time constant is not a […]
220V LED circuit – AC mains powered LED driver
Efficient LED driving is tricky, you’ve to take care of both LED voltage and current. Here is a transformer less 220V LED circuit, not very efficient, but very simple and quick. This led driver uses just few parts, still capable of running LEDs from 150V to 230V , but the main point is it’s simplicity and […]
20 watt push-pull CFL inverter circuit
Here a simple but efficient CFL inverter circuit, capable of diving a CFL, PL or tube light up to 20 watt. You can use this circuit to power up mobile chargers too, while power consumption not exceeding 20 watt. This inverter circuit is powered by a 12 volt lead acid battery, minimum capacity of 5 Ah. […]
Simple Piezo buzzer circuit with UM66T IC
A piezo buzzer circuit is quite popular to make feedback or alert sounds. You can find them in wristwatches, cars, medical devices, sirens, panic alarms and like so. In a previous post I wrote about how to make a self driving piezo buzzer with a 3 terminal piezoelectric element. That buzzer works well, but makes just high […]
Simplest SMPS power supply ever – efficient and powerful – from an old CFL
New to power electronics ? Here is your first SMPS project. But a SMPS from an old/dead CFL ? Yes, it’s possible, with a little modification, of course the CFL’s ballast is in working condition. This simple hacked SMPS is not just a toy, quite efficient and powerful too, while the output power depends on […]
DIY 3.3V USB breakout board, LVTTL and LVCMOS compatible
Nowdays 3.3V logic level is gaining popularity, almost every every new microcontrollers are working on 3.3 volt. The worst part is some of them are not tolerant to input voltage above 3.6 volt, while USB is 5 volt. So if you connect a such microcontrollers to USB directly, probabbly it’s gone ! Here how you can make […]
Simple magnetic buzzer circuit with UM66 IC
Electromagnetic buzzers are another type of popular buzzers, they’re operated at relatively lower voltage and are of smaller size than piezo buzzers. A magnetic buzzer circuit is usually found in low voltage devices, like in clocks or as microcontroller buzzers, though there is no rule of such. They can make reasonably loud sound at as […]
Simple Piezo Buzzer circuit diagram and project details
Piezo buzzers are one of the most common buzzers available around, they got their name from the piezoelectric material used as the active element. These buzzers are usually driven at a relatively higher voltage but low current, consumes a little power, but still capable of producing very high sound. So, here we’re going to build […]