Трансивер радио 77 схема


If you feel that somebody is tampering with your telephone line you might find this little circuit useful. It detects if there is another telephone connected to the line, if there is a short or an open line. Appropriate component-value substitutions will yield variations in these parameters. This circuit was designed for a sound effect, but may serve other useful purposes when a basic, swept-frequency audio source is required. Каталог программ Производители Каталог схем Datasheet catalog.

Among the essentials for circuit design and prototyping is the continuity tester, a simple device which provides an audible indication when a sufficiently low resistance is applied between its input probes. This version has a feature which automatically turns off the tester after about two minutes, thereby saving the 9 volt battery from inadvertent discharge.

Трансивер Радио - 77. Последняя часть

Трансивер радио 77 схема

This circuit converts a square waveform to a triangle waveform while automatically maintaining a constant triangle amplitude for a wide range of input frequencies. It produces both square and triangular wave outputs that ascend from about 80 to Hertz in a repeating cycle of about 12 seconds. Among the essentials for circuit design and prototyping is the continuity tester, a simple device which provides an audible indication when a sufficiently low resistance is applied between its input probes.

Телевидение Телефония Узлы цифровой электроники Фототехника Шпионская техника. It detects if there is another telephone connected to the line, if there is a short or an open line.

Трансивер радио 77 схема

This circuit was designed for a sound effect, but may serve other useful purposes when a basic, swept-frequency audio source is required. Among the essentials for circuit design and prototyping is the continuity tester, a simple device which provides an audible indication when a sufficiently low resistance is applied between its input probes. This circuit converts a square waveform to a triangle waveform while automatically maintaining a constant triangle amplitude for a wide range of input frequencies.

Appropriate component-value substitutions will yield variations in these parameters. Although originally designed for application in a communications system, the idea is readily adaptable for certain electronic music applications where waveform conversion is desired.

This version has a feature which automatically turns off the tester after about two minutes, thereby saving the 9 volt battery from inadvertent discharge. It produces both square and triangular wave outputs that ascend from about 80 to Hertz in a repeating cycle of about 12 seconds. This is a rather sensitive circuit which will detect minute variations of a magnetic field, particularly the Earth magnetic field.

Каталог программ Производители Каталог схем Datasheet catalog. This circuit converts a square waveform to a triangle waveform while automatically maintaining a constant triangle amplitude for a wide range of input frequencies.

Трансивер радио 77 схема

It detects if there is another telephone connected to the line, if there is a short or an open line. Appropriate component-value substitutions will yield variations in these parameters. Каталог программ Производители Каталог схем Datasheet catalog. This version has a feature which automatically turns off the tester after about two minutes, thereby saving the 9 volt battery from inadvertent discharge. It produces both square and triangular wave outputs that ascend from about 80 to Hertz in a repeating cycle of about 12 seconds.

Among the essentials for circuit design and prototyping is the continuity tester, a simple device which provides an audible indication when a sufficiently low resistance is applied between its input probes. Although originally designed for application in a communications system, the idea is readily adaptable for certain electronic music applications where waveform conversion is desired.

It produces both square and triangular wave outputs that ascend from about 80 to Hertz in a repeating cycle of about 12 seconds. Appropriate component-value substitutions will yield variations in these parameters. This version has a feature which automatically turns off the tester after about two minutes, thereby saving the 9 volt battery from inadvertent discharge.

Трансивер радио 77 схема

Трансивер радио 77 схема

Телевидение Телефония Узлы цифровой электроники Фототехника Шпионская техника. If you feel that somebody is tampering with your telephone line you might find this little circuit useful. Although originally designed for application in a communications system, the idea is readily adaptable for certain electronic music applications where waveform conversion is desired.

Appropriate component-value substitutions will yield variations in these parameters. Каталог программ Производители Каталог схем Datasheet catalog. Among the essentials for circuit design and prototyping is the continuity tester, a simple device which provides an audible indication when a sufficiently low resistance is applied between its input probes.

It detects if there is another telephone connected to the line, if there is a short or an open line. Although originally designed for application in a communications system, the idea is readily adaptable for certain electronic music applications where waveform conversion is desired. It produces both square and triangular wave outputs that ascend from about 80 to Hertz in a repeating cycle of about 12 seconds.

Among the essentials for circuit design and prototyping is the continuity tester, a simple device which provides an audible indication when a sufficiently low resistance is applied between its input probes. If you feel that somebody is tampering with your telephone line you might find this little circuit useful.



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