Free Simple Circuit Diagram
A simple way to build a battery-powered RS-232 receiver circuit is shown on the following schematic diagram. This circuit convert RS232 level to TTL level. Because the 100 KΩ resistor prevents device damage, the input voltage can be driven as much as +- 30V without adverse effects. The LTC1045 draws only 100 μA of quiescent current, and has a propagation delay […]
Read more
Unwanted noise is eliminated by FET. FET also added capacitance caused by long cobias connecting hydrophone to shore station. Voltage gain is unity. Hydrophone preamp can be used with cables up to 3000 feet long. Use 1 Meg resistor between gate and ground to suppress low frequency excursions of signals if hydrophone moves in water. [Circuit’s schematic diagram source: seekic.com]
Read more
The circuit shown in the schematic diagram below is an isolated dc-to-dc step up converter. Being isolated means that there is no electrical connection between the input and the output. We can say that there will be no current or electron transfer from input to output, since the output current loop ant the input current loop is isolated by a […]
Read more
The IC is allowed to be biased at a -50 V rail with a shunt zener by the small current consumption of a MAX641 so that the IC can convert -50 to 5 V. In telecom systems, this is a common requirement where logic circuit must be powered from the central office battery voltage. The feedback signal is shifted by […]
Read more