Ramsey Electronics DN1

DN1 • 15

present, giving us an accurate representation of one cell contained in the

pack.

33. Install R21, 47K ohm [yellow-violet-orange].

34. Install DIP switch S1 (D)ual (I)nline (P)ackage. Make sure that the

switchable contacts face toward the outside of the circuit board, allowing

for easy changing of number of cells to charge.

35. Install 47K ohm resistors R19, R18, R17, R15, R13, R8, R6, and R4

[yellow-violet-orange]. Pay extra attention in soldering not to create any

solder “bridges” between circuit traces.

36. Install R24, 47K ohm [yellow-violet-orange].

37. Install R27 and R26, both .5 ohm ½ watt [green-black-silver].

38. Install R2, 10 ohm [brown-black-black].

39. Install R23, also 47K ohm [yellow-violet-orange].

40. Install R25, 1K ohm [brown-black-red].

41. Install R11, 10K ohm [brown-black-orange].

42. Install R20, 10K ohm [brown-black-orange].

43. Lastly, install the provided hookup wire (red to the +V, black to the -

V) into the circuit board. Due to numerous types of battery packs used,

this “two wire “ type of hookup is as far as we go. Many types of battery

holders can be found quite reasonably priced at your local electronics

store. Please understand that it was nearly impossible for us to predict

the type of pack that was to be charged with this kit.

44. Since the S2 switch that was previously installed comes from the

factory as a “toggle” switch but our application uses a “pushbutton” input,

we’ll need to make a small modification to the mechanics of the switch to

suit our purpose.

Locate the switch “guide pin” on switch S2. With a small pliers, gently lift