Aug 26, 2014
The post explains an aquarium feeder timer circuit which sustains a set of continuous operations as per a predetermined timing sequence through the respective pot controls. The idea was requested by Mr. Mike.
Aug 25, 2014
The post presents an industrial water level controller with drain timer circuit. The idea was requested by Mr. Lanfrank.
Aug 20, 2014
Here a simplest yet quite accurate inductance meter is presented, which can be built within few minutes. Furthermore, the circuit can be powered-up with a single 1.5V cell. However, a frequency meter would be required to work-out the inductance.
Aug 17, 2014
The post presents a simple cellphone triggered remote control circuit that can be applied as a cellphone operated remote car starter. The unit would cost less than $20 to build.
Aug 16, 2014
A class D amplifier is basically a category of amplifier in which the power devices (mosfets and BJTs) are operated like switches.
The post explains a simple small induction cookware heater circuit or an induction kadai circuit. The design is a low tech, low power design, and may not be on par with the conventional units. The circuit was requested by Mr. Dipesh Gupta
Aug 10, 2014
The post explains a circuit that will switch off a group of lamps in sequence with a predetermined delay rate, as set by the user through a built in pot. The ideas was requested by Mr. Azam Jamal
Aug 4, 2014
All the spy circuits presented below are significantly powerful, hard to trace in their hidden positions, and equipped for grasping even the weakest of whispers in the vicinity. Moreover the designs are capable of transmitting the picked information upto radial distances exceeding 2 kms.
Aug 3, 2014
The post shows how the versatile IC LM317/338/396 may be used as a variable voltage regulator and also as a variable current regulator through simple configurations.
The post presents an 6v or 12v battery charger circuit for positive earth cars which could be used for upgrading 6V positive earth cars, facilitating an external 12V battery to be used in them along with the existing 6V battery with a common positive earth body. The idea was requested by Mr. Joe Ceretti.
Aug 2, 2014
The post presents a discussion regarding the troubleshooting of a 4047 IC based inverter output voltage drop problem on connecting a load. The solution was requested by Mr. Isaac Johnson.
Aug 1, 2014
You could probably win a million US dolars if your designed inverter is the smallest in the world and produces a minimum of 1kva, that's what the Google's little box challenge states. Are you ready for it?