This circuit can be used for moving an LED bar graph in the upward sequence or downward sequence through a couple of push button switches. The concept can be implemented for many other useful applications. Using IC LM3915 In many circuit applications we require a digitally operated control system enabling an upward or downward control […]
Indicator
LED Timer Indicator Circuit for Board Games
In this article I have explained a simple LED indicator timer circuit which can be used with board games for indicating the elapsed time or the time consumed by the player to complete his or her turn. The idea was requested by Mr. Shane Robins. Technical Specifications Hope all is well with you. I am relatively new […]
Intruder Position Indicator Security Circuit
In this post I have explained an LED based intruder position indicator circuit which will indicate the position of the burglar throughout the secured corridor as the person tries to sneak past the area.The idea was requested by Mr. Michael. Circuit Objectives and Requirements Your articles are nice, well done. sir can this, close and […]
Patient Drip Empty Warning Indicator Circuit
In this post I have explained about a simple mechanism, and a circuit which will enable a patient’s IV drip bottle system to sound an alarm whenever it gets almost empty, and needs a replacement. The warning circuit will help doctors and the concerned employees to concentrate on other important matters while the drip systems […]
Make a Simplest Temperature Indicator Circuit
A very simple temperature indicator circuit can be built by interconnecting a single transistor, a diode and a few other passive components. Using Transistor as a Heat Sensor As we know that all semiconductors have this “bad habit” of changing its basic characteristics in response to ambient temperature changes. Especially basic electronic components like transistors […]
Automatic Bathroom/Toilet Engage Indicator Circuit
In this post I have explained a very simple automatic bathroom/Toilet Engage indicator circuit which can be installed with any relevant door bolt for implementing the actions. The idea was created and submitted by Mr. Sandipan. The Design I have one more idea that need your help. I would like to implement is at my […]