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  • 105 Audible Continuity Probe
  • Audible Continuity Probe
  • Audible Continuity Probe

    105 Audible Continuity Probe

    MSRP:
    Now: $23.90
    (You save )
    (2 reviews) Write a Review

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    • Overview
    • Reviews

    Product Description

    Audible Circuit Probe

    Use to check

    • Continuity
    • AC & DC Voltages
    • Resistors to 1 meg ohm
    • Capacitors to 3000 mfd
    • Diodes & Transistors
    • Compare Circuit Resistance

    The Circuit Probe produces a tone that varies with resistance, capacitance, or voltage. May be used to check continuity, compare circuit resistances, check capacitors, diodes or LED and trace audio signals (up to 1 KHz).  Will test live circuits up to 130 VDC or AC (AC is modulated tone). Because the probe is current limited, it will not generate the high current surges normally produced by lamp and buzzer type testers. The probe will not harm any circuit.  Sharp pointed tip on one end and a minigator clip on the other. Cable length 36". 9 Volt battery included.  Size 7" x 1.2" x 0.9"

    Safe for Semiconductors & CMOS Logic
    (probe is current  limited to 500ua.)

    Resistance

    0 Resistance (probes shorted)= "REFERENCE TONE"
    As resistance goes UP to 1 meg ohm, Frequency goes DOWN to 10Hz.
    ___________________________________________________________________________________

    DC & AC Voltage

    DC RANGE- 0-130 volts MAX
    0 volts- "REFERENCE TONE"
    To +130 volts- Frequency goes UP with voltage
    To - 8 volts- Frequency goes DOWN with voltage

    AC RANGE- 0 to 130 volts MAX
    Frequency goes UP with voltage, and is an AC modulated tone.
    ___________________________________________________________________________________

    Capacitor

    NON-POLARIZED CAPACITORS (ceramic, mylar, ect.)
    Less that .01 mfd. - No Tone
    .01 to .5 mfd. - One click
    .5mfd to 3000mfd. - Tone changes from High Freq. down to 10hz.

    POLARIZED CAPACITORS (electrolytic & tantelum)

    105-c.jpg

    Same indications as above if connected this way.105-c.jpg

    If leads are reversed, tone will only go down to "REF. TONE" and possibly start back up.
    1. Before testing, short capacitor leads together to discharge.
    2. Ceramic capacitors may have buzzing sound depending on leakage
    3. Capacitor is shorted if "REF. TONE" is heard in both directions.
    ___________________________________________________________________________________

    Diode- Zenner- LED- Rectifier

    105-dio.jpg

    "Reference Tone will be heard"

    WITH LEADS REVERSED DIODES
    1 to 3hz may be heard because of leakage

    RECTIFIERS
    Up to 20hz is acceptable of normal leakage

    ___________________________________________________________________________________

    TRANSISTOR

    105-tra2.jpg

    TRANSISTOR GOOD-When connected as above, and a tone slightly lower than "REF. TONE" is heard.
    TRANSISTOR OPEN- No tone, when connected as above.
    TRANSISTOR SHORTED- If tone is heard when leads are reversed.
    ___________________________________________________________________________________

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    Audible Continuity Probe
    105 Audible Continuity Probe

    2 Reviews Hide Reviews Show Reviews

    • 5
      Extremely simple and versatile Test Probe

      Posted by Russ on 2020 Apr 13th

      I put this to use right away on a field job for a Fire Dept. client, while servicing a Fire Stations Dispatch audio and activation system. I was very tickled at how I could quickly and easily verify the systems AC line voltage, DC supply voltage, ground and operational continuity! I originally purchased this item out of curiosity plus to patron an American Mfr'd product.

    • 5
      I use this everyday at work and at hone as well.

      Posted by Leonard Garland on 2019 Dec 2nd

      This is faster than a meter, you don't even need to turn it on. You can find intermittents by listening to the sound as you manipulate your device. Some ac plugs will fail with a lose pin, you will hear a tick tick sound when that happens. Its also good for to check any light bulb or both input and output of a wall wart. Its a great electrician tool as well, instantly check a switch or if power is present.

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