Turn your Digital Voltmeter into an Inductance and capacitance meter. Page 1. Page 2. Products 1 – 20 of 22 Source LCR Meter Accessories at ; the leading distributor of IT, Test Peak Electronic Design LLSm LCR Meter Adapter.

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The switch S2 is in position “L”.

FOA – LC Connector adapter

The switch S2 is in position “C”. Inructance an DVM with high input impedance to measure a voltage across the capacitor “C”.

By continuing to use this site, you are consenting to our use of cookies. This device is an addon to a digital or analog voltmeter. A power supply of the circuit is a 9-Volt battery or any other voltage source. Connect a battery and a DVM digital volt adapyerput a known inductor in the LX position then adjust the potentiometer until you get the anticipated reading on the DVM.

If you use a DIP, your life will be much easier.

Inductance Meter

To participate you need to register. This circuit provides DC output voltage on the clamps Ibductance, X7, and this voltage is directly proportional to the inductance of Lx. The last inverter in merely to make the pulse positive in polarity so that the voltage increases as the inductance increases.

There is a remote possibility that you are using a damaged 74HC14, but check this last since it isn’t very likely. A switch S2 is used to configure the measurement circuit. Never mind, just adjust the oscillator frequency until you get it to calibrate.

It can be connected to any type of stereo audio source such as iPod, Computer, Laptop, CD Player, Walkman, Television, Satellite Receiver, Tape Deck or other stereo system to transmit stereo sound with excellent clarity throughout your home, office, yard or camp ground. The procedure is straightforward: Inductance Meter In-Use The resolution of the analogue meter obviously limits its performance, but I generally use it to just ensure I am in the right ballpark while winding coils or picking from daapter junk box.

Arduino Prototype uses all standard through-hole components for easy construction, two of which are hidden underneath IC socket. I took this circuit from this page on the QRP Homebrew site and made some modifications to it, described below.

The transistor Q1 is used to amplify the signal to provide sufficient current through potentiometer R8 and a load circuit. The hysteresis in the schmitt trigger allows it to oscillate with the simple feedback circuit.

It also analyzes transistor’s characteristics such as voltage and gain. The circuit relies on a voltmeter with a millivolt range and a high input impedance as a readout device, so it doesn’t have a buffer on the output.

Real-Time ‘Stopwatch’ This is a simple electronic “stopwatch” you can use to time an event. I had run across the forerunner of this circuit, one that is more sophisticated in that it has a zero adjustment and range switch, but it was inductanfe to higher inductances. For example, use a 1 microhenry inductor and adjust the potentiometer to get mv on the DVM.

Simple Audio Signal Injector Here’s a signal injector for those of us like me who don’t have a bench full of nice test equipment. If it isn’t, its probably because the thresholds on the 74HC14 are not symmetrically positioned around 2. It works as an oscillator whose frequency is determined by the RC components R Just saying hello Started by MichaelaJoy Yesterday at 6: In the one I built I used a pair of alligator clips soldered to stout wires a couple of cm long.

The pulse width 6889 proportional to the inductance and inversely proportional to the resistance. The voltage regulator provides 6-Volts stabilized voltage for the circuit. For a better experience, please enable Metwr in your browser before proceeding.

At first, adjust potentiometers R This RC network operates as an integrator circuit. Here are some things to check when calibrating: Articles Top Articles Search resources. Any inductance in that path will add to the measured inductance, so keep it short and small.

Inductance and capacitance meter adapter for DVM

Started by fastline Yesterday at 8: Resource icon Inductance measuring adapter for multimeter C5 in feedback circuits. Check out all five ranges. The voltage is negative. Inductors with iron cores, high permeability ferrites, or with large amonts of shunt capacitance cannot be measured accurately. If not, you may have too much inductance in the leads to LX or have connected LX to a noisey ground point.

It is a very useful bench test equipment for testing and finding out the frequency of various devices with unknown incuctance such as oscillators, radio receivers, transmitters, function generators, crystals, etc. You can control lights, fans, AC system, computer, printer, amplifier, robots, garage door, security systems, motor-driven curtains, motorized window blinds, door locks, sprinklers, motorized projection screens and anything else you can think of.