①The actual resistance value can be detected by connecting the two test pens (not positive or negative) to the two ends of the resistor. In order to improve the measurement accuracy, the range should be selected according to the nominal value of the measured resistance. Due to the nonlinear...
The transistor is a kind of current amplifier device, but in actual use, the current amplifier effect of the transistor is often transformed into a voltage amplifier effect through a resistor. Ⅳ Amplification principle of transistors 1 The emitter emits electrons to the base The power supply Ub...
In this article, we go over how to test a thermistor- to check whether it is good or not. Athermistoris a resistor whose resistance changes according to the temperature it is exposed to. There are 2 main types of thermistors: negative temperature coefficient (NTC) thermistors and positive te...
For high frequency measurements beyond the capabilities of the NI 9223, NI recommends a scope or digitizer for PXI designed for lab, research, and test systems. Measuring DC Current CTs do not measure DC curent or the DC offset component of an AC signal. For most AC power applications this...
When working on a circuit board, it may be necessary to lift one of the leads of the resistor from the board to measure the correct resistance of the resistor. The resistance measurement displayed by a digital multimeter is the total resistance through all possible paths between the test lead...
A resistor and an LED In order to play with TTL gates, you must have several pieces of equipment. Here's a list of what you will need to purchase: A breadboard A volt-ohm meter (also known as a multimeter) A logic probe (optional) A regulated 5-volt power supply A collection of...
aThe DC current shall be measured with current-meter in mA by applying 12 V DC voltage and having 350 mA through the test cable. This will adjust by a variable resistor (see Figure 4). The test cable shall withstand the current without getting hot.The measurement accuracy shall be 1 mA ...
aThe effective load placed upon the LIN master pull-up resistor simply cannot source enough current to meet the minimum input voltage requirement under all operating conditions. 有效的装载被安置在大师拉扯电阻器的林不可能来源简单地符合极小的输入电压要求的足够的潮流在所有操作条件下。[translate] ...
aThe DDC bus requires a pull-up resistor. The resistance will vary based on the capacitive loading of the bus (and on the number of devices connected). The 10k default value, assuming a maximum of 100pF per device, provides the necessary 1µs pull-up rise time. Please refer to the ...
Ground Resistance Tester, also generally outputs an AC power supply with a no-load voltage of 6V, and an AC source with a constant current of 10A or 25A is added between the two points to be measured. The tester can test the voltage drop between the two points, and according to Ohm's...