I recently bought Charles Platt's Make: Electronics (first edition) as my first introduction to electronics. I have no prior experience whatsoever.
Under Introducing Schematics on page 50 is a schematic (Figure 2-35) of a two-switch circuit. The positive end of the 3V power source leads to a 220Ω resistor, then an LED, the two SPDT switches then ending in the negative pole. When I built this according to the schematic, it didn't work. Only after reversing the poles (negative/black wire leading to resistor) as illustrated in picture form in Figure 2-17 did the LED illuminate.
I would like to know if Figure 2-35 is simply misprinted or if there is some conventional flow/electron flow distinction I'm missing.
If I'm posting this in the wrong forum, I'd appreciate advice on where to go. Otherwise, thanks in advance for your response.
Under Introducing Schematics on page 50 is a schematic (Figure 2-35) of a two-switch circuit. The positive end of the 3V power source leads to a 220Ω resistor, then an LED, the two SPDT switches then ending in the negative pole. When I built this according to the schematic, it didn't work. Only after reversing the poles (negative/black wire leading to resistor) as illustrated in picture form in Figure 2-17 did the LED illuminate.
I would like to know if Figure 2-35 is simply misprinted or if there is some conventional flow/electron flow distinction I'm missing.
If I'm posting this in the wrong forum, I'd appreciate advice on where to go. Otherwise, thanks in advance for your response.