Cast the bells. Meaning, origin, examples of the use of phraseological units

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Winged words, phraseologism. Meaning, history of origin, examples of use

Winged words, phraseological units

Directory / Winged words, phraseological units

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pouring bells

Proverbs and sayings

Phraseologism: Cast the bells.

Meaning: To lie, spread fables, gossip, gossip (disapproved).

Origin: The expression is associated with the superstitious custom that existed in the old days to spread incredible rumors, fables during the casting of church bells. It was believed that the more incredible the rumor or fable would be and the more people would believe it, the louder, more beautiful in tone the new bell would be.

Random phraseology:

Buy a pig in a poke.

Meaning:

To acquire something without knowing anything about the quality and merits of what is being acquired.

Origin:

The expression is known in many foreign languages (in French, Chinese, etc.). It dates back to the Middle Ages, when scammers tried to sell a cat instead of a hare or a rabbit.

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Random news from the Archive

MAX14001 - universal isolated discrete input 28.02.2017

In automation systems, discrete (binary signals) coming from buttons, switches, sensors, actuators, etc. are very common. There are several types of digital inputs and several different standards that have requirements for them.

The traditional discrete signal receiver solution is built very simply, without the use of complex components and circuit solutions. However, each requirement requires its own specification, and sometimes the circuitry of the discrete input channel. In addition, traditional solutions do not allow for additional processing of the input signal to improve noise immunity.

The unification of the input and the implementation of additional functions lead to the fact that it is necessary to use additional components (ADC, ION, microcontroller, digital isolator, isolated power supply), and this leads to a high cost of the discrete input channel and complicates the production process.

Maxim Integrated has released the MAX14001 and MAX14002, the unique ICs - System-on-a-Chip for Universal Discrete Inputs, which allow you to implement an intelligent discrete input with individual (per channel) galvanic isolation using a single chip.

Built-in 10-bit ADC allows you to have a wide dynamic range at the channel input, which makes it possible to work with both low-voltage discrete signals (12, 24V) and high-voltage discrete signals (220V). Thanks to the built-in digital comparator, there is no need to constantly read and process data from the ADC. The trigger threshold can simply be set via SPI and the ADC data processing (if required) can be started only after the comparator triggers.

In addition to the ADC and comparator, the MAX14001 and MAX14002 also have a digital isolator and an isolated power supply. The characteristics of the built-in voltage reference are sufficient to provide the required accuracy in determining the operation in the input signal range up to 300V. But if you want to improve the accuracy of the converter, you can use an external source (for example: MAX6006, LM4041, LM4051, REF3312, REF3012).

Additional features supported by this chip are the ability to provide a tunable rejection pulse and control the input impedance of the channel using an external transistor.

Features:

Galvanic barrier: 3,75kVRMS
ADC: 10 Bit, 10kSPS
ION: +-5%
Isolated built-in power supply
SPI interface
Built-in Diagnostic Functions
Setting the notch pulse
Setting the bias current to adjust the input resistance

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