The IC LM 339 is primarily created to compare two input voltages and generate a corresponding output. Having said that, before we try to learn regarding the various LM339 based circuits, it would be important to go through the standard features of the LM339. It is basically a quad comparator IC, meaning we can find […]
Search Results for: 555
Model Train Controller Circuit
In this post I have explained how to build a simple yet a realistic model train controller circuit, which can be integrated with the rail tracks of an existing motorized train system and used for controlling its speed, acceleration, deceleration with original effects. How the Circuit Works A schematic diagram for the Train Controller can […]
Capacitive Fluid Meter Circuit for Sealed Tanks
At times it becomes important to determine the amount of water inside a sealed tank, by employing a stationery sensor. A sensible remedy to the issue is to make use of a cylindrical capacitor concept. One plate of the capacitor is created with the liquid surrounding an insulated conductor, where insulation of the conductor works […]
Visible Light Communication Circuit [using InfraRed]
You can use this simple visible light communication circuit to send audio and digital information through infrared light, beyond a mile away, with extreme precision. By Sunil Rao The main features of the light communicator circuit can be understood with the following points: Output power = 5 millwatts Frequency Modulation Operation with 50 kHz carrier […]
7 Accurate Square Wave Oscillator Circuits
In this article I will comprehensively discuss 7 accurate RC square wave oscillator circuits with 50% duty cycle, by appropriately configuring the gates from various CMOS ICs such as 4001, 4011, 4093, 4046, 4047, 4016, 4060 etc. and also using op amps. Definition The square wave oscillators included in this article can be defined as […]
RGB Spot Light Generator Mixer Circuit
In this RGB spotlight mixer circuit project, 3 individual spot lights are used, having red, green and blue focus light bulbs in them. The lights can be focused on walls, ceilings or floors to create interesting slow rising, slow fading red, green blue light patterns that mix and diffuse to generate interesting, additional secondary colors. […]