A simple cell phone charger with timer circuit is presented in the following article, which could be used for charging a given Mobile phone for a specified predetermined length of time. The idea was requested by Mr. Saad. Circuit Objectives and Requirements Could you design me this charger circuit ? Input 230V 60 Hz, and the […]
Newly Updated Circuit Projects:
Timer Controlled Submersible Pumpset Circuit
In this post I have explained a timer circuit for submersible borewell pumpset which alternately switches the pumpset ON/OFF at a predetermined rate in order to allow the ground water sufficient time to restore at regular intervals and to ensure a consistent water supply to the attached overhead tank. The idea was requested by Mr. […]
IC 4060 Latching Problem [Solved]
The post talks about an IC 4060 timer circuit problem implemented in a coffee wending machine, in which the circuit simply stops working each time its stipulated delay period is lapsed, even after a complete power switch OFF and ON. The question was presented by Mr. Kenndy and was solved through the following email discussion: […]
UP DOWN Logic Sequence Controller Circuit
Using a set of latch/reset networks it becomes possible to allow a logic to move in a forward sequence, switching ON a given set of outputs HIGH, in response to an alternating input clock. And once the max limit is reached, the input clocks begin shutting down or withdrawing the sequence in the opposite order. […]
Foolproof Laser Security Alarm Circuit
In this post I have explained a a simple yet versatile foolproof laser security alarm circuit which can be used for securing any concerned premise with extreme accuracy. The idea was requested by GPS. Circuit Objectives and Requirements Your circuits were very useful to me. Thanks for all your posts, but i wanted something different […]
Make this TV Remote Jammer Circuit
The proposed TV remote jammer circuit can be used for freezing and scrambling all TV remotes under the specified vicinity. How TV Remote Works As we all know the fundamental technology used in today’s TV or similar remote controls is Infrared (IR) light. The IR spectrum of light is invisible to the human eye, but […]