Part | Description | Radio Shack | Digikey | Notes |
---|---|---|---|---|
IC1 | TL431ILP, Motorola LM431 NTE999 |
n/a | 296-1292-ND | Prec. Voltage Ref. |
D1, LED | Light Emitting diode | P374-ND | 5mm, red | |
D2 | 1N4001, diode | 1N4001DICT-ND | Gen. Purp. Rec. | |
R1 | 470 ohm, resistor | 271-1317 | 5%, 1/4W, carbon | |
R2/R3 | 10 ohm, resistor | 271-132 | 5%, 25W, WW | |
R4 | 1.5K, resistor | 5%, 1/4W, carbon | ||
P1 | 10K, trimmer-pot | 10-turn, Bourns | ||
K1 | 5V-1A, relay | 275-240 (5V) | 3V type is best | |
S1 | SPST, switch | 275-8077 | momentary 'on' |
Part | Description | Radio Shack | DigiKey | Notes |
---|---|---|---|---|
IC1 | TL431ILP, Motorola | n/a | 296-1292-ND | Prec. Voltage Ref. |
D1, LED | Light Emitting diode | P374-ND | 5mm, red | |
D2 | 1N4001, diode | 1N4001DICT-ND | Gen. Purp. Rec. | |
R1 | 1K, resistor | 271-1321 | 5%, 1/4W, carbon | |
R2/R3 | 10 ohm, resistor | 271-132 | 5%, 5W, WW | |
R4/R5 | 10 ohm, resistor | 271-132 | 5%, 5W, WW | |
R6 | 10K, resistor | 271-1335 | 5%, 1/4W, carbon | |
P1 | 10K, trimmer-pot | 10-turn, Bourns | ||
K1 | 7V-2A, relay | 275-005 (7V) | 6V preferred | |
S1 | SPST, switch | 275-8077 | momentary 'on' |