4-20mA current loop tester components === ###### tags: `4-20mA current loop tester` `20S-itt2-project` :::info - **Location:** Room A1.19 - **Date:** 2020-01-28 - **Contact:** <nisi@ucl.dk> :::warning To prepare building a 4-20mA current loop tester in week 7 we need to know if we have all the neede components in stock. From this [tutorial](https://circuitdigest.com/electronic-circuits/4-20ma-current-loop-tester-using-op-amp-as-voltage-to-current-converter "4-20mA current loop tester build") make a part list. Investigate if we have the needed components in the e-lab component room, if we do put them on the `Components in stock` list, if we don't put them on the `Components to order` list including a link to the cheapest part on either: * https://dk.farnell.com * https://dk.rs-online.com * https://www.cypax.dk/ ::: :::danger **Components to order** | Quantity | Part name | Price (DKK) | Link | | -------- | -------- | -------- | ---- | | 12 | potentiometer 50k | 7,9kr | https://dk.rs-online.com/web/p/potentiometre/5220697/ | | 0 | BC556 | 0,52kr | https://dk.rs-online.com/web/p/transistorer-bipolaere/8031131/ | | 6 | LM358 | 2,52kr | https://dk.rs-online.com/web/p/forstaerkere-operationsforstaerkere/1454295/ | | 4 | 100R 5% | 3,8kr | https://dk.rs-online.com/web/p/hulmontering-faste-modstande/0151798/ | | 6 | 300K 1% | 5.93kr | https://dk.rs-online.com/web/p/hulmontering-faste-modstande/0159010/ | | 8 | 0.1uF 16V | 0.2615kr | https://www.cypax.dk/vare/06.069.0710 ::: :::success **Components in stock** | Quantity | Part name | Price (DKK) | Link | | -------- | -------- | -------- | ---- | | enough | 100KΩ | 0,4kr | https://dk.rs-online.com/web/p/hulmontering-faste-modstande/2141406/ | | many | 1kΩ | 0,8kr | https://dk.rs-online.com/web/p/hulmontering-faste-modstande/0159010/ | | 1 | LED red | 3,4kr | https://dk.rs-online.com/web/p/products/2285988/?tpr=1 | | 3 | potentiometer 50k 15 turn | 18,04kr | https://dk.rs-online.com/web/p/trimmemodstande/2509641657/ | | many | 100nF/0.1uF | ? | ? | | many | 100pf | ? | ? | | many | 100pF 16V | 0,6kr | https://dk.rs-online.com/web/p/keramisk-enkeltlags-kondensatorer/1733602/ | | many | 10nF 16V | 1,3kr | https://dk.rs-online.com/web/p/polyesterfilm-kondensatorer/6224634/ | | many | BC327 | :::