The LM317T Voltage Regulator integrated circuit is very useful in many renewable energy applications. LM317T can be used to regulate current – to regulate the current in a string of LEDs – or it can be used to provide a stable fixed voltage output. The LM317T is a adjustable 3 terminal positive voltage regulator capable [...]
schematics+hv+tube+transceiver+500+wat
ISOLATED FULL DUPLEX RS232C INTERFACE Circuit The isolator is advised to accommodate electrical abreast amid a computer and the accessories affiliated to its consecutive port. This can be all-important back the ambition arrangement works at a absolutely altered voltage level, or back apple loops charge be avoided. Figure 1 shows how the electrical abreast is [...]
This is a similar circuit to the above and provides a 4 LED bar graph indicating the voltage of a common 3.6 volt Lithium – Ion recharable cell phone battery. The reference voltage is provided by a TL431 programmable voltage source which is set to 3.9 volts where the TL431 connects to the 1K resistor. [...]
This Bat Detector Circuit is authored by Chris Eve. Basic tests with a variety of salvaged electret microphones all showed good response to 50kHz and beyond, the smaller the unit the better the response. My tests indicate that a small electret microphone has at least some response to 100kHz and that this response is reasonably [...]
Atmel AT89C2051 Single Chip Microprocessor Circuit Notes : * This is a actual simple appliance of a distinct dent chip (IC1). * The array ability accumulation is affiliated on terminals T1 &T2. While the ambit diagram specifies 3v/4.5v battery, the allotment ULN2803 needs 4.5v-5v array to get able operation. * About-face SW2 allows the PCB [...]
