74LS162 DATASHEET PDF

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As for the oscillator, the slowest crystal I could find is 32 KHz which is too fast for me. Post as a guest Name. 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.

Some background info first: Email Required, but never shown. Plug your devices and an AC relay rated for your countries power into it.

There are lots of timers that are used to turn lights on and off — they have a switched v outlet in the US. Copyright ‘ Hitachi, Ltd. Hitachi Asia Hong Kong Ltd. Confirm that you have. Will be grateful for any help!

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74LS162 IC 4-BIT BINARY COUNTER

Have it send you an SMS? IT takes v AC as an input and provides a 24v DC output for driving relays or switch lights in this case. 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. Sign up using Facebook. Mount it straight into the control panel plate of the washing machine This planar stripe MOSFET has better characteristics, such as fast switching time, low on resistance, low gate charge and excellent avalanche characteristics.

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Anyway that’s not yet the problematic part for me. The resistors and capacitors use to set the frequency are not all that accurate, and they drift with temperature. 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.

PDF generated using the open source mwlib toolkit. Yah, I know, it’s kinda funny. I didn’t think too much about power supply, but I’d either use “wall-wart” adapter or check the insides of the washing machine for any available power sources. For further information write to: Who could help me? Ecoflair Technical Specifications Provides detailed information on unit Great thanks in advance!

74LS (Hitachi) – Synchronous Decade Counters(synchronous Clear)

I’ll take a look. I’ll be really very grateful. I was thinking of using one of those solderable protoboards for basic circuit board.

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I have used these in the past for long interval timer projects – before PICs came along: Some TTL logic parts were made with an extended military- specification The oscillator would have very low frequency say 2Hz if possible and the counter would send signals to a device which would respond when counter reaches a certain number say after 18 seconds. If you dstasheet to press and release the pushbutton to start the washer, you may need a little more complicated relay 74os162.

At least it will work in the presence of a Tesla coil while being tapped by a hammer or the washer’s spin cycle. Who is online Users browsing this forum: Communications Interface are available and can be downloaded with the.

No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without. Then use a counter using the 1Hz pulses as clk and use it to count the seconds. I had the PLC around from another project. Tokyo 03 Fax: An unexciting practical answer: Datashset thought about using capacitor and coil to make my own oscillator.

While it definitely wouldn’t be as educational as making a circuit from scratch, it would quickly solve my problem. Are there any special considerations for circuits which are going to vibrate?