Network Voltage Indicator

Using this schematic can be made a network voltage indicator electronic circuit. If the input voltage is present across the network, the opt...

Alarm Sound with Control Switch

The heart of this circuit is IC No. 555. When the alert sound was working, even though the switch will continue to be the same, the sound st...

Sound level indicator circuit

This sound level indicator circuit can survive used to control the intensity of a sound recording or else featuring in a disco. It has 5 mea...

Volt meters & ampere meter with PIC

Volt meters & ampere meter with PIC can be used to measure voltage and current simultaneously. The series of volt meters & ampere me...

Audio Peak Indicator Circuit

The existence of the peak indicator "Audio Peak Indicator" in an audio device is needed. Audio Peak indicator is a simple circuit ...

Battery Level Monitor Circuit

Battery Level Monitor Circuit This simple circuit can monitor the charging process in 12 Volt Lead Acid battery or Tubular battery. The stat...

Magnetometer

Magnetometers are scientific instruments that are used to measure the direction and strength of magnetic fields in the location that the dev...

Digital Thermometer with data processing of a microcontroller AT89C4051

Digital Thermometer 0-100.0°C is a digital thermometer that operates in modetemperature measurement in Celsius (° C). Digital Thermometer 0-...

Stereo Balance Indicator

Mechanical deficiencies that affect the reproduction of sound in a stereo amplifier is probably what you are thinking, armpit all the proble...

555 timer chip tester

IC 555 timer tester is a simple circuit that serves to test the condition of IC 555. 555 timer circuit tester, in principle, start the timer...

Audio peak indicator circuit

The existence of the peak indicator (Audio Peak Indicator) in an audio device is needed. Audio Peak indicator is a simple circuit to detect ...

LM3914 battery level indicator

Battery level indicator circuit is a circuit that is used to measure the battery voltage / battery. The main components of the battery level...

Polarity indicator circuit

Is is easy to test the polarity of a circuit’s point whether it is positive or negative by using the tester circuit featured here. The teste...

Polarity protection circuits

The most simple polarity protection tehnique is to connect a series diode to the power line input. The diode conducts only when the power su...

12V battery indicator level

The following sequence is useful to show the battery voltage (battery) 12 volts. Voltage level is shown with four lights led. To facilitate ...