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 _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe send an email to time-nuts-le...@lists.febo.com