Police Strobe Light Circuit

When powered this police strobe light circuit, produces the recognizable strobe light illumination that can be seen in police cars. To arrive at the desired effect two pieces of lights were implemented (in our scenario: LEDs), which are activated alternately. Whenever a set is running, the corresponding LED turns on and off three times. Subsequently […]

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Simple Transistor Tester Circuit

The circuit used in making simple Transistor Tester Combo-2 has only one IC. This IC performs the following process as mentioned below: Test Process1: Position the transistor to the three circuit terminals of Circuit 1 (located either below of left of the terminal). Once pointed, the red LED can then identify the PNP transistor base. This […]

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Light Activated Switch Circuit

This light activated switch circuit relay is activated only in the presence of light. It has many applications, it could be used as a photocell and to off the light in a room or turn on the radio when it is dawning, etc. Working of light activated switch The photoresist / LDR whose ohmic value […]

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PIR Motion Sensor Circuit

The post discusses a simple PIR motion sensor circuit shared by one of the interested members of this blog.   This is my smallest, cheapest, foolproof etc. movement detector with dim-switch that works in all conditions. In the drawing “tv” means “or similar”. Enjoy! I have operated the circuit with 2½-9V, but maybe ca 5V […]

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Simple Mutifunction Timer Circuit

A timer is practically unachievable without IC 555 or counter ICs along the lines of CD4029 or CD4060. The simple mutifunction timer circuit in this article takes advantage of an inverter rather for accomplishing the same duty. As revealed in the projected multifunction timer circuit, gate N1 together with C1, R1, VR1 and VR2 shapes 21 […]

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Exponential Waveform Generator Circuit

This exponential waveform generator circuit provides you with a waveform which sinks exponentially from a specific voltage to near-zero, after which quickly resets to reactivate the sequence. In the beginning C1 is charged to +12V, and O1, O2 are each off. The timing capacitor at this time there discharges gently by means of R1, the […]

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Automatic Day/Night Switch Circuit using Bi-Metal Strip and LDR

The following explained automatic day night switch circuit using a Bi-Metal strip and an LDR is able to automatically illuminate your porch light or power up some other equipment once the ambient lighting falls below the specific intensity. A ·light dependent resistor is employed in sequence with a relay. The resistor possesses a value above […]

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Gas Sensor Circuit

This gas sensor circuit is going to identify just about all pollutants available as gaseous material when it is more than a specific predetermined limits. Just to illustrate the suggested circuit can be applied for sensing the LPG gas leakage in a your home or the increased signs of CO2 contamination in excessive traffic afflicted […]

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Headphone Loudness Controller Circuit

Numerous contemporary top quality amplifiers include headphone loudness controller circuit in-built inside. Practically in most scenarios these are by hand flipped into circuit the minute preferred in some amplifiers the circuit is switched in constantly. Having said that you will find all kinds of outdated or contemporary affordable amplifiers that will be not installed with […]

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Automotive Engine Temperature Controller Circuit

The article talks about a basic opamp structured automotive engine heat controller circuit for regulating servos in accordance with the coolant heat, the concept was wanted by Mr. John Circuit demand from Mr. John Really like your websites. Discovered a lot of circuit I am going to be constructing. I am trying to find an […]

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