This revised version passed a second design review, and the prototypes were completed in October 1971 as the NE555V (plastic DIP) and SE555T (metal TO-5). The design change decreased the required 9 external pins to 8, so the IC could be fit in an 8-pin package instead of a 14-pin package. After this design was tested and found to be without errors, Camenzind got the idea of using a direct resistance instead of a constant current source, finding that it worked satisfactorily. The first design for the 555 was reviewed in the summer of 1971. Camenzind's idea was originally rejected, since other engineers argued the product could be built from existing parts sold by the company however, the marketing manager approved the idea. Camenzind proposed the development of a universal circuit based on the oscillator for PLLs and asked that he develop it alone, borrowing equipment from Signetics instead of having his pay cut in half. Signetics subsequently laid off half of its employees due to the 1970 recession, and development on the PLL was thus frozen. He designed an oscillator for PLLs such that the frequency did not depend on the power supply voltage or temperature. In 1968, he was hired by Signetics to develop a phase-locked loop (PLL) IC. © 2023 - American & European Tanning & Wellness Inc.The timer IC was designed in 1971 by Hans Camenzind under contract to Signetics. Simply connect a bed or booth with a built-in "T-Max certified" timer to your daisy-chain network and you are ready to go! T-Max timers are the manufacturers' top choice for in-bed timers. Place the T-Max Monitor Plus in your laundry or backroom and check the status of your rooms at a glance! Use the Adnet Repeater to boost the signal in larger salons. The T-Max 3A can also be used as a stand-alone controller. The bright LED display constantly gives the customer both delay time and the time left in the session. This allows the customer to start the tanning session from the room. The versatile T-Max 3A timer is installed in each tanning room. You can also broadcast a message to all rooms, play advertisements or instructions before and after a session. In addition the 3A has the ability to call each room and each room can call you! Use the intercom master at the font desk, If your customer has any questions about the tanning bed operation thye only need to press the Call button and ask! The T-Max 3A intercom has the same great features as the versatile 3A. With a computer system in your salon either of these units provide the computer interface for the timing system, as well as provide backup operation to keep the salon operational even if your computer crashes. Each unit can control up to 64 in-room timers (use two units for up to 128 rooms). Select either a T-Max Manager Pro or the T-Max Manager for your front desk operaation. You get to enter products and services in words, instead of cryptic hard-to-decipher "codes", track inventory, employee hours and schedules, and more! Utilize the SunTouch Register to record day-today sales, adjust product inventory, automatically assign employee commissions, update client records and much more! The status of each room is color coded on the main screen, such as when a room is in use, when it needs to be cleaned, and when it needs maintenance. SunTouch keeps you in control of your business. From reports, time cards, mailing lists, to at least 5 tasks your employees will perform daily: adding a client, tanning a client, adding a client to a wait list for a bed, and making appointments (if you take appointments). Suntouch is known for its ease of use for everything needed to run your tanning salon.
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