All winter long, Robert basks in tropical temperatures right at home in upstate New York-thanks to an ignition timer system he designed for his ancient (1928) but efficient hot water boiler. At startup, the timer keeps the ignition on for 90 seconds while the burner comes to temperature. Tolerant of line noise and sags, it's designed to restart in the event of a line interruption longer than one second. Click here for details.
Are you a Gadget Freak? Allied Electronics would like to send you on a shopping spree of up to $500 on its website at www.alliedelec.com/gf.asp. E-mail Design News ([email protected]) your proposed project (must incorporate electronic components and involve sensing, motion, timing, and/or networking elements), along with a description of how it works, and a parts list.
If your project is selected, you'll receive the shopping spree of up to $500 and will be featured in an upcoming edition of Design News.
| Boiler Ignition Timer System | ||
|---|---|---|
| Parts List | ||
| Amt | Part Description | Allied Part # |
| 1 | Resistor, Power | 296-5404 |
| 2 | Resistor, Carbon film | 296-6340 |
| 2 | Resistor Carbon film | 296-6346 |
| 1 | Resistor, Carbon film | 296-6348 |
| 1 | Resistor, Carbon comp | 296-5644 |
| 1 | Capacitor, Electrolytic | 852-6686 |
| 1 | Capacitor, Ceramic | 881-5430 |
| 1 | Capacitor, Film | 998-2106 |
| 1 | Diode | 950-1102 |
| 1 | Diode, Zener | 568-0029 |
| 1 | SCR | 568-5079 |
| 1 | IC, Programmable timer | 735-1353 |
| 10 | Neon Pilot Lamp | 749-2100 |
| 1 | Relay, 120VAC, SPDT | 821-5101 |
| Other supplies: Perforated vectorboard | ||