Antenna Deployment Circuit Testing

[SeanTedesco]

Motivation

The proposed antenna deployment system requires a circuit to perform the deployment. The current design is to provide power to a Nickel-Chromium wire to generate heat and melt a fishing line. This ticket is to track the progress of developing the electrical system used to provide that power.

Next Steps

• [x] Generate a list of voltage regulator ICs to be tested.
• [ ] Create a test PCB with different footprints to break out the pins of the different voltage regulators.
• [ ] manufacture the test PCB
• [ ] test the different ICs for the antenna deployment system with the NiCad wire and fishing line
• [ ] use the chosen IC in the rest of the designs

Definition of Done

a single IC is identified to be used in the antenna deployment board

cc: @lambertjacob @SeanTedesco

[SeanTedesco]

Reading through some existing projects (BIRDS-2 and Xatcobeo, and ORCASat) most of the deployment actuator and detection circuity is kept very easy; however, there are some inconsistencies with how much power is required. In one paper it said running about 2A across a ~5 ohm resistor (20 W), while another only called for 0.125 W of power through a resistor.

To settle this confusion, we can test these different regulators to provide the required power:

• ADP7158: Linear Voltage Regulator IC Positive Fixed 1 Output 2A 8-SOIC-EP
• SC4215: Linear Voltage Regulator IC Positive Adjustable (Fixed) 1 Output 2A 8-SOIC, EDP-
• SC4216: Linear Voltage Regulator IC Positive Adjustable (Fixed) 1 Output 3A 8-SOIC, EDP
• ADP7159: Linear Voltage Regulator IC Positive Adjustable 1 Output 2A 8-SOIC-EP