Voltage Indicator - in many devices we encounter the need to indicate the level of voltage or current. Regardless of whether we are working on our own construction of the laboratory power supply or a simple charger to charge a car battery, properly selected instrument to measure key parameters provides reliable measurement with the appropriate accuracy for the application. Botland store offer lets you find both simple, analog electrical meters and ready-made devices helpful in everyday work of electronics and electricians.
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Romi Chassis Kit - 2 Wheel Robot Chassis - red - Pololu 3502
Index: PLL-07347
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Voltage indicators
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Battery charge level and sound level indicator - KA2284
The module is based on the KA2284 system. It is used to measure the input signal with the 5 LEDs, which are gradually included depending on the value of the measured voltage....
Index: MOD-07150
Index: MOD-07150
USB tester Keweisi KWS-1802C current and voltage meter from USB C port - white
USB meter in white, designed for testing USB type C sockets . It is equipped with a small but clear LCD screen , which displays voltage, current, capacity, operating time,...
Index: DNG-17512
Index: DNG-17512
Voltmeter KWS-AC300 with split-core current transfer - 50-30V/100A
The KWS-AC300 is a closed-core AC transformer that allows you to measure current parameters. A small LCD display shows data indicating voltage and current, temperature,...
Index: DNG-17859
Index: DNG-17859
USB multimeter KWS-V21 Charger Detector
Small size USB meter designed for testing USB 2.0 sockets . Very easy to use. It is equipped with a clear LCD screen, which displays voltage, current, capacity and...
Index: DNG-17513
Index: DNG-17513
Analog ammeter - panel 91C16 mini - 20A
Analog ammeter capable of measuring current in the range up to 20 A. It has a square case in size 40 x 40 mm. The accuracy CLASS 1.5.
Index: PRO-10210
Index: PRO-10210
Analog ammeter - panel 91C16 mini - 30A
Analog ammeter capable of measuring current up to 30 A . It has a square housing with dimensions of 40 x 40 mm. Its accuracy is CLASS 1.5.
Index: PRO-10211
Index: PRO-10211
Non-contact voltage tester Voltcraft MS-100
A small size tester manufactured by Voltcraft. It enables direct and indirect measurement of DC voltage up to 12 V and AC voltage up to 250 V . The values of the measured...
Index: CNR-19349
Index: CNR-19349
Analog ammeter capable of measuring current in the range up to 15 A. It has a square case in size 47 x 47 mm.
Index: PRO-10202
Index: PRO-10202
Analog ammeter - panel DH-80 - 100A
Analog ammeter capable of measuring current in the range up to 100 A. It has a square case in size 80 x 80 mm. The accuracy CLASS 1.5.
Index: PRO-10204
Index: PRO-10204
DFRobot Gravity - I2C battery charge level meter
A module designed for reading the Li-Pol 3.7 V battery charge level in real-time. It is also equipped with alarm function when the battery level is low, or when battery power...
Index: DFR-12263
Index: DFR-12263
LC709203F - LiPoly / LiIon Fuel Gauge and Battery Monitor - STEMMA QT / Qwiic - Adafruit 4712
Battery level indicator from Adafruit. It allows to measure the voltage of Li-Pol and Li-Ion batteries. Displays the voltage value and percentage charge of the cell. The...
Index: ADA-18235
Index: ADA-18235
Analog ammeter capable of measuring current in range up to 30 A. It has a square case in size 47 x 47 mm.
Index: PRO-10203
Index: PRO-10203
Analog ammeter - panel 91C16 mini - 5A
Analog ammeter capable of measuring current range to 5 A. It has a square case in size 40 x 40 mm. The accuracy CLASS 1.5.
Index: PRO-10208
Index: PRO-10208
Digital voltmeter - LED 32x32mm - 500VAC - green
Digital voltmeter capable of measuring voltages ranging from 20 V to 500 V AC. It has a square case with LED display 32 x 32 mm.
Index: AKS-12077
Index: AKS-12077
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USB tester Keweisi KWS-1802C current and voltage meter from USB C port - black
A USB meter designed for testing USB type C sockets . It is equipped with a clear LCD screen, which displays voltage, current, capacity, operating time, internal temperature...
Index: DNG-17511
Index: DNG-17511
Analog voltmeter - panel 91C16 mini - 250V DC
Analog voltmeter capable of measuring voltage up to 250 V. It has a square case in size 40 x 40 mm. Yhe accuracy CLASS 5.0.
Index: UPM-09925
Index: UPM-09925
Analog voltmeter - panel BP-65 - 40V DC
Analog voltmeter capable of measuring DC voltage in the range up to 40 V. It has a round case with a diameter of 82 mm. The accuracy CLASS is 2.5.
Index: UPM-09926
Index: UPM-09926
Analog ammeter - panel DH-50 - 5A
Analog ammeter capable of measuring current in range to 5 A. It has a square case in size 50 x 50 mm. The accuracy CLASS 2.5.
Index: PRO-10201
Index: PRO-10201
Analog ammeter - panel BP-65 - 30A
Analog ammeter capable of measuring current up to 30 A . It has a round housing with 82 mm diameter. Its accuracy is CLASS 2,5.
Index: PRO-10214
Index: PRO-10214
Voltage indicator Rebel RB-15B
Indicator allowing for quick determination of the voltage we are currently working with. The measurement is presented using LEDs on the front of the device. Each diode...
Index: LEC-18382
Index: LEC-18382
Measuring adapter Voltcraft PM-45
The adapter allows to measure voltage and current of the device connected to the USB port . For proper operation it requires the use of a universal digital or analogue meter...
Index: CNR-19345
Index: CNR-19345
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Analog ammeter - panel DH-50 - 10A
Analog ammeter capable of measuring current in range up to 10 A. It has a square case in size 50 x 50 mm. The accuracy CLASS 2.5.
Index: UPM-09921
Index: UPM-09921
Analog ammeter - panel DH-50 - 30A
Analog ammeter capable of measuring current in range up to 30 A. It has a square case in size 50 x 50 mm. The accuracy CLASS 2.5.
Index: UPM-09922
Index: UPM-09922
Analog ammeter - panel 91C16 mini - 10A
Analog ammeter capable of measuring current in the range up to 10 A. It has a square case in size 40 x 40 mm. The accuracy CLASS 1.5.
Index: PRO-10209
Index: PRO-10209
Zobacz również
Voltmeters - the charm of old devices
Analog voltmeter, or indicator voltage meter, is the longest type of voltage indicator on the market. In the past, each voltage indicator, from a simple amp meter in amplifiers and cassette recorders, to the high class laboratory equipment, was equipped with the so-called measuring "circuit". The principle of operation of such an element is very simple: the flow of current through a light, delicate coil connected to the pointer, causes it to rotate in relation to a permanent magnet. The angle of deflection depends on the current intensity, which in turn - with a specified coil resistance - is proportional to the voltage at its terminals. Thus, it can be seen that the same measuring instrument, depending on the additional resistors connected (or not), can serve as both an ammeter and a voltmeter.
Modern applications of analog indicators
Today, despite the widespread availability of digital devices and their low price, pointer voltmeters and ammeters are still readily used. As an example, let's take old-style devices - audio tube amplifiers are the best proof of the continued popularity of traditional indicators. Also simple power supplies, including laboratory power supplies, are often equipped not with a typical LED display, but just an analog voltage indicator. Inexpensive everyday electrical devices, such as car chargers, also often use indicator meters.
Voltage indicators, or can you "see through walls"?
Yes, of course, if we mean the detection of hidden wires or metal parts in walls. For this purpose, voltage detectors are used, which are able to detect, from a short distance, electric cables through which current flows or magnetic field disturbances caused by metal objects (e.g. rebar). For installers and do-it-yourselfers, a "pen" voltage indicator will also be a great help, which will easily identify the phase wire in an electrical installation.