.. components in the circuit under test. This circuit passes only 100 µA through the probes, which is a factor of 10 less than most multimeters. No on/off switch, so there's no danger of leaving it switched on and running down the ...
.. protect the MOSFETs from overvoltage and overcurrent, two Zener-resistor pairs are used: R3/DZ1 and R4/DZ2. R3 and R4 are 10 kohms; DZ1 and DZ2 are 12 V 1 W. LED LD1 indicates the presence of power and is powered through the series resistor ...
.. 2. But that passive network, though discarded for now, will come in handy later. The necessary biasing is provided by R8 10. Because R4 is now bridged by ~23k, A1’s gain is increased slightly. R5’s new value gives the same error ...
.. Figure 9. Top view of the Blu-ray Microscope. However, it can be flipped open for an easy insertion of the specimen (Figure 10). Figure 10. Laser Microscope with sample. The distance between the OPU's outlet lenses and the sample can ...
.. from builders’ skips/dumpsters! Figure 4 shows the module from Figure 2 mounted on/in a block of it, with at least 10 mm of foam around any part of the circuit module. Figure 4. The module from Figure 2 mounted on a block of foam. The ...
.. the extremely wide range of the analog quantity (frequency) involved, e.g., 100,000:1 for Christopher Paul’s 5-decade 10 Hz to 1 MHz sawtooth generator (Ref. 1). 5 decimal decades = 10 ppm and is equivalent to a linear binary resolution ...
.. of frequency. A rising CV results in a higher frequency. CV = 0 is allowed and generates F MIN . The useful tuning range is 10 and ≥ 100, with some caveats noted below. Although it uses only 2 resistors and 1 capacitor, like the classic 555 ...
.. out, but unbalanced temperature drifts couldn’t and they predominated, leading to reading errors of up to 1 for a 10 change in the circuit’s temperature. I did find one IC that was okay, but making this idea work properly called ...