The circuit shown in Figure 1 is suggested by Texas Instruments (www.ti.com), consisting of an interface between a piezo-resistive type pressure transducer and the input of an analog-to-digital converter (ADC).
In the industry, many machines and equipment are powered by three-phase sources of electric power. Power control of such machines using solid-state devices such as SCRs and TRIACS requires special configurations. In this paper we describe a basic three-phase power control circuit, whose operating principle allows it to be easily adapted to higher power applications.
We describe the assembly of a simple alarm that detects when some sudden movement occurs in a door, window, object that can be stolen or even motorcycle or bicycle. In the standby condition it has an extremely low consumption and can be powered by batteries.
This is a very useful device for those who have extension on their telephone line, wants to maintain their privacy and, in addition, have some feature to warn when someone is occupying the line. Simple to assemble, it is powered by two common batteries and as its consumption is very low in the standby condition, its durability is very great.
This noise transmitter produces a signal that covers all the frequencies of the FM range within a few tens of meters, thus preventing the action of small spy transmitters that may be in action at this location. Another possible application for this circuit is as a test for receivers or other devices that may be subject to interference.
Oxygen sensors find a wide range of domestic use (gas leak detectors), industrial and automotive. See in this article how they work and how these sensors are used.
We find this circuit in 1975 documentation. The circuit can be used with other operational...
Although not using transformers, this amplifier may have difficulty mounting if the original...
This amplifier, obtained in an Argentinian publication of the 1970s, provides a 6 W output. The...
This circuit of the 1970s uses Germanium transistors. Changes can be made to use silicon...
The power source shown for powering for small TTL circuits was found on a Radio Electronics...
IGBTs are widely used in frequency inverters, power controllers, switched sources and DC/DC...
This oscillator can run in frequencies up 10 MHz depending on the Power supply voltage. The 1 µF...
This one-digit counter is part f the samples bench of the MultiSIM in one of its versions. The...