PURPOSE: To obtain the inexpensive and highly reliable remote control device capable of transmitting various kind of signals with two signal wires fundamentally by a method wherein voltage signals, having different voltages for each functions to be selected as the signal for the remote control, are utilized and the functions are discriminated at the side of the main body of equipment in accordance with respective voltages.
CONSTITUTION: A remote control box B is provided with a rotary switch SW for selecting the functions and the operations of relays 1K, 2K, 3K can be selected by selecting one of the contacts of the rotary switch. For example, if the rotary switch SW selects the contact S3, the voltage signal of 1V is transmitted to comparators U1, U2, U3 through a signal line SL and only the output of the comparator U3 becomes H-level. When the output of the comparator U3 becomes H-level, a transistor Q3 is put ON by receiving the output and the relay 1K, controlling the function of hot-bath, is operated.
KIMURA SANJI
UCHIDA HIROAKI
YOUEI SEISAKUSHO KK
| JPS54156249A | 1979-12-10 |