DIY ESR Meter, Capacitor meter.

Spent a few hours knocking this together.
www.vintage-ra...
zpostbox.ru/sim...

[@zx8401ztv]

Hey you have two testers now, check caps in stereo lol The slamming of the needle, 4.7uf across the meter perhaps :-D White sticky paper parcel labels are handy for quick rescaling lol, yes im cheap :-D The spare meter and box, you could not get any better than that, smashing. Most testers use a frequency to test caps, but would that type of test work correctly testing a resistor with no reactance. I don't know lol. Nice to see you having a bit of fun :-D

[@driverfilmsshortwavechannel]

Nice little project. Might build one at some point. Thanks for sharing!

[@waynesharp1690]

Worthwhile little project and probably more accurate than a lot of the cheap Chinese meters 👍

[@opposites-369]

I have an analog ESR made in China which can measure pressure the strength of storing capacitance, such as measuring the blood pressure of a heart pacemaker, even measuring in pico farad units, which means it can measure types of capacitors other than electrolyt capacitors, what I like about analog ESR is that it can detect half damage unlike ESR digital which only detects whether it is still good or completely damaged, the advantage of analog ESR made in China can also detect half the damage to diodes & transistors, it is very cheap, I bought it for only around 17$ but I am very satisfied 👍🏻

[@BetoBar-bh2kr]

@@opposites-369 can you post the brand and model #, or a link to buy it? Thanks

[@GeorgeChristofi]

Might have to build one of those. I don't need it cos I have a peak but its a lot more sacrificial if you check high voltage caps.

[@michaeldranfield7140]

Very good, it's just a pity on you exhaust meter the green and red of the scale are reversed to what they should be for an ESR test.

[@kevb1816]

Case is near perfect for the project!

[@jimsimpson1006]

A nice little project this, might just persuade me to get back into electronics after many years away.

[@terryblackman6217]

Thanks for sharing. You can't beat a bit of shit in the shed. 👍😆

[@treadmillrepair754]

I bought the GME-236 for Us$130 dollars. One of the best ESR meter in the market for tepair technicians.

[@EireHonour]

Really need more videos like this 🤗

[@TheCrakkle]

Beggar me I was wondering how you got such a nice scale on it until I saw Hawk Exhaust gas analyzer. Good bit o kit.

[@Vosv66]

Д'якую, гарний прибор.

[@EJEuth]

I also found this circuit and I’m tempted to make it. Your video motivated me to proceed. A comment though: that 220uF ‘CoSonic’ tester beeping (time: 11:17) might mean the Cap is conducting galvanically - something it was not supposed to do. That is why it measures also low ESR in your DIY, as this simpler circuit does not differentiate Ohmic resistance leakage than low ESR; but for this, any DMM or Analog Multimeter does this part of test. Thanks for sharing!

[@larkop6504]

Nice piece a kit, was going to suggest an attempt at a PKE meter, but you would be able to go anywhere near the Dail. Must check out some of your other videos.

[@EJEuth]

Another point: in case you have any Oscilloscope, even like those cheap DSO, it would be great to see the waveform frequency (F_0 and does it drift?) and amplitude (mVpp) for different cases as 1R, 3R3, 10R (ohmic) and 1uF, 10uF, 100uF, 1000uF - for instance. My guess it that the circuit operates at such lower amplitudes that it could be used to measure ESR in-circuit - with more confidence after testings. An idea for a second video, if you allow the suggestion. Thanks again!

[@marcelocamposcampos7605]

Buenas tardes colega excelente instrumento , me podría pasar el circuito muchas gracias , saludos desde Argentina.

[@irishguy200007]

Nice lab

[@piconano]

Since 2.5 mH is not a standard inductor, can one connect a 2.2mH and a 300uH in series and call it good enough? Inductor dots observed of course.

[@IrishvintageTVRadio]

2.2mH would be close enough.

[@piconano]

@@IrishvintageTVRadio Gathering parts to build one. I have everything but have to find them. Thanks for everything.

[@randomsteve4288]

Just a few thoughts... the calibration of any ESR meter should not be done with standard wirewound resistors, as the ESR meter uses AC and a standard wirewound resistor has impedance which will interfer beyond its pure DC resistance. Especially on a design like the one here where the Capacotor under Test becomes part of a free running LC oscillator. On that note; for calibration purpose get some carbon resistors or metal film 1 Ohm 1% and series string/parallel them to make up various values. And on second note; most ESR Meters run at an AC of 100kHz. Calculating roughly the frequency of your common collector colpitts oscillator I end up at about 15 kHz... so the DIY meter will be widely off at capacitancrs below 1uF. Plus seeing how your cap wizard shows your 1 ohm wirewound as 1,5 ohm is just testimony to my doubts on using wirewound resistors as calibration resistors for ESR meters; at your DIY meter's 15kHz the additional parasitic inductive resistance of the wirewound 1ohm resistor is about 10 times smaller than on the 100kHz the capwizard uses. No wonder the cap wizard reads the 1 ohm wirewound high.

[@IrishvintageTVRadio]

Jim said it would be grand.

[@opposites-369]

Can it measure up to pico farad?

[@IrishvintageTVRadio]

No, for measuring ESR in electrolytic capacitors only.

[@dvnoytekvlog6634]

Hello I want watching..