[time-nuts] Re: Noise down-converter project

[Mike Monett]

Ed,

You spoke of difficulty measuring inductors. There are quite a few LCR
meters on the market that offer the performance needed in your project.
Here are three:

1. TH2822C Handheld LCR Meter counts/Accuracy
0.25%/100Hz,120Hz,1kHz,10kHz,100kHz
CAD$293.91
https://www.aliexpress.com/item/32429957886.html
- Watch out for counterfeits on asian sites

TH2822C Handheld LCR Meter 
USD$339.00
https://www.amazon.com/TH2822C-Handheld-Meter-Frequency-100kHz/dp/B07H68D1DP

TH2822C PORTABLE handheld Pro LCR
USD$371.48
eBay item number:281423062278

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2. DER EE DE-5000 High Accuracy Handheld LCR Meter
USD$89.99
Each LCR parameter is automatically selected and measured in the optimum
range.
Parallel (Lp/Cp/Rp)/Serial (Ls/Cs/Rs) Mode Switching
4-wire Kelvin connection measurement/2-wire connection measurement
Test frequency: 100/120/1 k/10 k/100 kHz (0.5 Vrms, sine wave)
D, Q, Ohm, ESR
Dual display: main 20,000/sub 2000 count
Relative Mode/Commodity
Japanese instructions provided by the manufacturer!!
Main specifications ? LCD: Main display section 19999 (4 + 1/2 digits),
Secondary display section 9999 (4 digits), Percentage bar graph, etc.

Measurement Range (Main Display)
L: 20.000 uH (minimum resolution 0.001 uH) to 2000 H
C: 200.00 pF (minimum resolution 0.01 pF) to 20.00 mF
R: 20.000 Ohm (Minimum Resolution 0.001 Ohm) ~ 200.0 MOhm
AC test frequency: 100 Hz/120 Hz/1 kHz/10 kHz/100 kHz (/ DC)
Measurement Rate: 1.2 Times/sec
Dimensions and mass: H 18.8 cm x W 9.5 cm x D 5.3 cm 350 g
Power Supply: 9V (B-03257), With Auto Power Off (Approx. 5 Minutes)

eBay item number:264863029607

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3. AideTek Vici 3 1/2 bridge LCR Meter 2000uF/200Mohm/20H Full pro 4070
USD$46.49 + USD$6.00 shipping

eBay item number:220305719450