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Bird Drinking Water Heater

Using a 2N3055

Bird Drinking Water Heater
Many people enjoy feeding the birds in their garden in winter with seeds, peanuts and bits of fat. However, it is often forgotten that these animals also need water. And when it's freezing, there is nothing for them to drink. This can be solved with an electronically heated water feeder, so that our feathered friends, even with temperatures below freezing, can continue to sip their water.
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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Members can exclusively download these files for free as part of their Membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service. Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

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The BOM (Bill of Materials) is the technically exhaustive listing of parts and other hardware items used to produce the working and tested prototype of any Elektor Labs project. The BOM file contains deeper information than the Component List published for the same project in Elektor Magazine. If required the BOM gets updated directly by our lab engineers. As a reader, you can download the list here.
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R1 = 12kOhm
R2 = 10kOhm
R4 = 3.3kOhm
R3,R6 = 1kOhm
R7 = 2.2kOhm
R5 = 4.7kOhm NTC
P1 = 4.7kOhm trimpot
D1 = 3.9V 1W zener diode
D2 = LED, red, 5mm
D3 = LED orange, 5 mm
T1 = BC547B
T2 = 2N3055 (TO3 case)
IC1 = LM393N
K1 = 2-way PCB screw terminal block
K2 = 3-way PCB screw terminal block
PCB # 130256-1, see [1]

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