to a pen at the receiving station, thus reproducing at the receiving station a drawing or signature made by the sender. it was the first such device to transmit drawings to a stationary sheet of paper; previous inventions in europe had used rotating drums to make such transmissions. the telautograph's...
this fire alarm circuit, a thermistor works as the heat sensor. one of the most requested items of information that we receive is for wiring diagrams for the meters we sell. water alarm circuit diagram midnight security light low cost burglar alarm for boats water level alert two-tone siren using one...
as impulse and wideband transformers and various types of chokes. chokes on toroidal ring cores are mainly used to suppress interference interference, in electricalcircuits on the inputs of pulsed power supplies and in electrical control systems for electric motors. if you are interested, we can help...
company of chicago . gray continued to invent for western electric. in , gray retired to do independent research and development. gray applied for a patent on a harmonic telegraph which consisted of multi-tone transmitters, that controlled each tone with a separate telegraph key. gray gave several private...