Parts · Opto
GL5516
LDR (Photoresistor) 5-10 kΩ light 0.5 MΩ dark.9 circuits use this part. Listed as: LDR.
Datasheet · archived copy from Senba; kept here as it was not found on the maker's own site
Substitutes same kind
Optocouplers and photoresistors of the same construction; the response speed and resistance range set how an effect sounds. The figures are read off each part's datasheet (this one's from page 2), typical where the sheet gives a typical value, otherwise the maximum. Closest first; the last column says what differs. A different part can change the sound, and a circuit may lean on one particular figure, so read the build document's notes before you swap.
This part
| Part | On | Dark | Rise | Decay | Boards |
|---|---|---|---|---|---|
| GL5516 | 5k | 500k | 30 ms | 30 ms | 9 |
CdS cell, 5 to 10 kΩ at 10 lux, gamma 0.5.
Alternatives
| Part | On | Dark | Rise | Decay | Boards | Differs |
|---|---|---|---|---|---|---|
| GL5528 | 10k | 1M | 20 ms | 30 ms | 3 | CdS cell, 10 to 20 kΩ at 10 lux, gamma 0.6. |
| PDV-P9203 | 10k | 5M | 60 ms | 25 ms | 4 | higher dark resistance. Bare CdS cell, 10-30 k at 10 lux and over 5 M dark; pair it with an LED in a light-tight sleeve for a homemade vactrol. |
| GL5537-1 | 20k | 2M | 20 ms | 30 ms | 2 | higher on resistance; higher dark resistance. CdS cell, 20 to 30 kΩ at 10 lux, gamma 0.6. |
| GL5549 | 100k | 10M | 20 ms | 30 ms | 1 | higher on resistance; higher dark resistance. CdS cell, 100 to 200 kΩ at 10 lux, gamma 0.9. |
| Faceplate | Circuit | Based on | Category | Vendor | Box | Knobs | Price | BOM |
|---|---|---|---|---|---|---|---|---|
| Tremshifter GL5516 OR GL5528 · TL072 | Dead Astronaut Tremshifter | Other | Dead Astronaut FX | — | 5 | £15.00 | 59 | |
| EarthQuaker Devices The Warden Vero20×22 Verified 2N5089 · GL5516 · MPSA18 · OPA2134 EarthQuaker Devices The Warden | EarthQuaker Devices The Warden | Compressor | Dirtbox Layouts | — | 6 | — | 36 | |
| Shoot the Moon Tremolo Vero17×17 Verified 4558 · GL5516 · JRC4558 · TL072 CultureJam Shoot the Moon | CultureJam Shoot the Moon | Vibrato / Chorus | Dirtbox Layouts | — | 4 | — | 23 | |
| DeadAstronaut Tremshifter Perfboard Verified 1458 · GL5516 OR GL5528 Dead Astronaut Tremshifter | Dead Astronaut Tremshifter | Tremolo | Effects Layouts (blog) | — | 5 | — | 37 | |
| Moon Trem (Culturejam Shoot the Moon Tremolo) GL5516 · JRC4558 / RC4558 / NE5532 · TL072 1590B | — | Vibrato / Chorus | Five Cats Pedals | 1590B | 4 | £4.50 | 37 | |
| Not So Clear 7805 · GL5516 · L7805 · LM386 Mid-Fi Electronics Clari(not) · 1590BB | Mid-Fi Electronics Clari(not) | Delay | Five Cats Pedals | 1590BB | 6 | £5.00 | 37 | |
| EQD The Warden compressor 2N5089 · GL5516 · MPSA18 · OPA2134 | — | Compressor | PCBWay: Glory to Ukraine | — | 6 | — | 31 | |
| Tremolo 4558 · GL5516 · TL072 CultureJam Shoot the Moon | CultureJam Shoot the Moon | Tremolo | PCBWay: Glory to Ukraine | — | 4 | — | 25 | |
| Tremulus lune 2N5088 · GL5516 · TL022 · TL072 | — | Other | PCBWay: Glory to Ukraine | — | 6 | — | 31 |