This programmable timer can be used for switching a load ON and OFF with two sets of time delays, which are programmable from 2 seconds to 24 hours independently. The delay timings are adjustable according to the users personal specs. The ON time delay and the OFF time delay are independently settable and this facility […]
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Earthquake Sensor Circuit [Seismic Sensor]
The article shows an earthquake sensor circuit idea which incorporates an innovative way of detecting the minutest of shocks caused by a possible earthquake tremor. The circuit is so sensitive that it is able to detect tremor of 4 on the Richter scale, yet remains unaffected to loud sounds or irrelevant bangs or noises. Introduction […]
AC Light Dimmer Circuit
In this post I have explained through two examples how to build a simple110 V or 220 V AC light dimmer circuit for controlling light intensity with pot, using the principle of triac phase chopping. A 220V dimmer switch circuit is basically a triac/diac based AC mains voltage regulator circuit which can be used for […]
9 Simple Solar Battery Charger Circuits
Simple solar charger circuits are small devices which allow you to charge a battery quickly and cheaply, through solar panels. A simple solar charger circuit must have 3 basic features built-in: In this post I will comprehensively explain nine best yet simple solar battery charger circuits using the IC LM338, transistors, MOSFET, buck converter, etc […]
Simple Car Shock Alarm Circuit
A simple car shock alarm circuit I have I have explained in this article can eb effectively used to alarm the owner each time the car comes across some kind of vibrational intrusion ether from a potential theft of simply a damaging hit from an external source. Introduction Today most of the cars are equipped […]
How to Make an Incubator Timer Optimizer Circuit
A timer circuit design which could be used for turning the position of the eggs in an incubator between predetermined intervals of time was requested to me by one of the keen readers of this blog, Mr. Eugene. The requested circuit has been exclusively designed by me and published here, Circuit Specifications Let’s hear the […]