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Online Catalog:Philmore and Calrad Electronics :Kits - Do-It-Yourself:Timers and Counter Kits

	Three Timer Circuits Philmore DATAKit # 80-850 Timer circuits are handy for many experimenters’ laboratory functions, not to mention the photo or PC lab. This kit is another three-in-one in that all three circuits are complete and separate; simply using different types of circuits to do exactly the same job. All come complete with 5 amp relays for controlling pretty significant loads. All may be operated on battery or light weight (9V DC) supply. The advantages and disadvantages of each design are discussed in the text. Educational and useful too. We suggest you also order a soldering tool kit to make this project. Click here to go to this item (# S540).  Click Here For Picture Of Soldering Kit # S540. Price:  $49.95
4 digit Up/Down Counter Kit Philmore DATAKit # 80-129 The kit is a low cost counter, counting from 0000 to 9,999 or down from 9,999 to 0000. The overflow output pulses low when the count wraps to zero; so, two counters could be connected together to make an eight digit counter. The clock input is debounced to prevent problems when using external mechanical switches. Operation on anywhere from 9 to 15 volts DC and 20 to 40 mA (depends upon how many display segments are lighted). The AT90s1200 is preprogrammed; builder is not required to program anything. There are five pairs of pins for external connections: RESET, CLOCK, DOWN, DISABLE, OVERFLOW. A Down connections sets the unit to count down. A Disable prevents counting at all; Resets sets the counter at zero (0000), Overflow outputs a pulse low when the counter reaches 0000. The Clock contact will pulse a ‘count’, and each time a switch connected to Clock is ‘on’ the unit increments a digit. The maximum speed of counting is a bit more than thirty (30) per second. The display is red LED digital 0.6" high. We suggest you also order a soldering tool kit to make this project. Click here to go to this item (# S540).  Click Here For Picture Of Soldering Kit # S540. Price:  $44.25
	High Accuracy Multi-Mode Timer Philmore DATAKit # 80-141 This is a very unique timer! Using a programmable microcontroller, this circuit revolutionizes timers in terms of flexibility and accuracy. The output relay is capable of handling up to ten amps. Time delay is easily selected (and accurately) with on-board dip switches. May be programmed from seconds up to 42 hours. Turn something on or off; seven different timing modes are available to the user. Click link below. The heart of the circuit is an ATMEL 89C2051 microcontroller already preprogrammed for you.  Click Here To See 7 Timer Modes Price:  $43.33

Online Catalog:Philmore and Calrad Electronics :Kits - Do-It-Yourself:Timers and Counter Kits

Minute Man Electronics

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