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Timed Beeper. Beeps for 7.5 seconds after a presetted time. Adjustable time settings: 15 sec 30 sec 1 min 2 min and others

    
Example: Infrared control system
Electronic circuits archive 


Timed Beeper. Beeps for 7.5 seconds after a presetted time. Adjustable time settings: 15 sec 30 sec 1 min 2 min and others







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Related electronic circuits:

Fridge door Alarm. Beeps if you left open the door over 20 seconds. 3V battery operation, simple circuitry

Timed Beeper. Beeps for 7.5 seconds after a presetted time. Adjustable time settings: 15 sec 30 sec 1 min 2 min and others

Fridge door Alarm. Beeps if you left open the door over 20 seconds. 3V battery operation, simple circuitry

AUDIO SWEEP OSCILATOR. This circuit was designed for a sound effect, but may serve other useful purposes when a basic, swept-frequency audio source is required. It produces both square and triangular wave outputs that ascend from about 80 to 730 Hertz in a repeating cycle of about 12 seconds. Appropriate component-value substitutions will yield variations in these parameters.

Adjustable continuity tester

AUDIO SWEEP OSCILATOR. This circuit was designed for a sound effect, but may serve other useful purposes when a basic, swept-frequency audio source is required. It produces both square and triangular wave outputs that ascend from about 80 to 730 Hertz in a repeating cycle of about 12 seconds. Appropriate component-value substitutions will yield variations in these parameters.

Adjustable power supply

An Adjustable 4/9:1 - 9:1 Impedance Transformer

Curious C-Beeper

Adjustable Strobe Light



ATTENTION! Timed Beeper. Beeps for 7.5 seconds after a presetted time. Adjustable time settings: 15 sec 30 sec 1 min 2 min and others, as all other schemes are located on the sites of their rightful owners. We are not liable for the contents of other sites as well as the site having a circuit Timed Beeper. Beeps for 7.5 seconds after a presetted time. Adjustable time settings: 15 sec 30 sec 1 min 2 min and others. Pressing the button you must get onto a page with Timed Beeper. Beeps for 7.5 seconds after a presetted time. Adjustable time settings: 15 sec 30 sec 1 min 2 min and others.

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