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I was thinking of using one of those solderable protoboards for basic circuit board.

Tun-Hwa North Road, Taipei I don’t think that it would be too complicated to make a circuit which will start a washing machine after X amount of time. Yah, I know, it’s kinda funny. Maker, TI [TI store].

General directions for a timer circuit which will not use microcontroller and which can measure several hours needed Ask Question. Have a look at basing your circuit around a CMOS stage ripple 47ls162 and oscillator. Email Required, but never shown. Anyway that’s not yet the problematic part for me. For what its worth I’m thinking that the button could be replaced by a transistor or some sort of normally off relay. An unexciting practical answer: Have it send you an SMS? Hitachi makes every attempt to ensure that its products are of high quality and reliability.

This planar stripe MOSFET has better characteristics, such 74ls62 fast switching time, low on resistance, low gate charge and excellent avalanche characteristics. Confirm that you have.



Thank you very much. Will be grateful for any help! CMOS timers can be used to achieve delays of hours. My first idea is to create or find prefabricated some sort of counter which would be connected to a slow oscillator.

No registered users and 9 guests. It is a free download 74ls1162 can be used as a layout Set the off time on the timer as close to the start time to release the relay.

Ecoflair Technical Specifications Provides detailed information on unit Who is online Users browsing this forum: I’ll take it into consideration.

74LS162 (16PIN)

In general, a Quasi-Resonant Converter QRC shows lower EMI and higher power conversion efficiency compared to conventional hard-switched converter with a fixed switching frequency. In 74LS’s datasheet under minimum frequency it says 25MHz if I’m reading it right, so I guess that it doesn’t fit my needs, but 74LS has 0 as minimal frequency so it looks like a logical choice to me.

Because of that, many people tend to turn on big energy consumers after midnight, when electricity is cheaper. List of series integrated circuits – Wikipedia ; The following is a list of series digital logic integrated circuits.

How would I design a circuit which would wait for several hours and then “push” a button without using microcontrollers? Some TTL logic parts were made with an extended military- specification The outputs go to the buttons and one is paralleled with the dryer start switch as you mentioned.


In general I have found that using a “complex” circuit of discrete components is usually plagued with minor errors in both design and construction that cause them to take a lot of time and money. For further information write to: Fri Sep 25, 8: No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without. I’ll take a look. The simplest and most pre-fabricated solution.

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Communications Interface are available and can be downloaded with the. Use the relay’s output to “push your button” however that needs to be done for the particular device. Who could help me? Actually I never would datasjeet thought of finding a useful purpose for my stack of alarm clocks which I never used.

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