Free electronic circuit design and schematic diagram
This schematic diagram is about IL300XC Isolation Amplifier circuit for TMP01 Temperature Sensor. This circuit is used in an environment that needs to be electrically isolated from the central processing area. This circuit uses an 8-pin optoisolator (IL300XC). IL300XC was chosen because it can operate across a 5,000V. To drive the LED connected between Pin 2 and Pin 1, this […]
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This is a stand alone temperature transducer/sensor circuit. This device uses The AD596/AD597, employing its internal junction compensation temperature sensor inside. This device can be used as temperature sensor by omitting the thermocouple and connecting the inputs (Pins 1 and 2) to common. Here is the schematic diagram of the circuit: The output will reflect the compensation voltage and the […]
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This is a signal injector circuit. Signal injector is important tool for troubleshooting your electronic circuits. As an example, this circuit can be used to test amplifier circuit. Here is the schematic diagram of the circuit: This circuit also a lot of harmonics. By connecting the ground clip to the 0v rail and move through each stage, starting at the […]
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This is a circuit that can produce 6 million gain. As well as detecting general electric noise, this circuit can be used to detect “mains hum,” the presence of your hand without any direct contact, and detect static electricity. Here is the schematic diagram of the circuit: The mains cable can be located by this circuit by moving it across […]
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This is simple logic probe circuit. Logic probe is used to determine if a point in a circuit has high or low state when the circuit is in operation. Here is the schematic diagram of the circuit: When the probe is not touching any circuitry, this circuit consumes no current. It can happen because the voltage across the red LED […]
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We can make a very simple battery monitor using a dual-colour LED and a few additional components. When the red and green LEDs are illuminated, the LED produces orange. The following battery monitor circuit turns on the red LED below 10.5v. The green LED illuminates above 11.6v. The orange LED illuminates between 10.5v and 11.6v. This simple battery monitor circuit […]
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The LED to flash 5 times per second if the unit is brought close to a live conductor (insulated, and even buried in plaster) capacitive coupling between the live conductor and the probe clocks the counter. That’s caused the 4017 IC divides the mains 50Hz frequency by 10. The unit stops counting, the LED resulting permanently OFF (or permanently ON […]
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