Easy LED Photo Sensor Circuit Using LM1458 IC

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 ...

Electronic Pest Repeller Mice Repellant

Here’s a circuit for electronic pest rat repellents emit high frequency sound waves to create an acoustically hostile environment that effectively repels rodents from protected areas. This is the figure of the circuit; Sound is inaudible to people and non-rodent pets. It is ideal for environments were the use of poisons is inadvisable or prohibited. Beware mice, rat and mouse. It is known that a...

Dog Repellent Circuit

Here’s circuit for dog repellent circuit that is a high output ultrasonic transmitter which is primarily intended to act as a dog and cat repeller. Here’s the figure of the circuit; This circuit can be used individuals to act as a deterrent against some animals. It should NOT be relied upon as a defense against aggressive dogs but it may help distract them or encourage them to go away and do not...

Proximity Detectors Block Diagram Using TDA161

This is a circuit that illustrated the Proximity Detectors Block Diagram using TDA161 from ST Semiconductor. The TDA161 is a monolithic integrated circuits produced and designed by ST semiconductor to be used for metallic body detection by sensing variations in high frequency Eddy current losses. This is the figure of the circuit...

Proximity Alarm Circuit

This is a design circuit for proximity circuit that can be used in alarm circuit. This is the figure of the circuit; Inverters U1a and U1b are connected in a simple RC oscillator circuit. The frequency is determined by the values of R1, C1 C2 and the internal characteristics of the integrated circuit. As long as the circuit is oscillating, a positive dc voltage is developed at the output of the voltage-couple...