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SA156 plastic bobbin
An SA156 plastic sewing machine bobbin which can be used for winding high-current air-cored inductors in the range of about 1-10µH. 6mm ID, 20mm OD, 10mm height.
Cat No SC3432. Price: AUD $1.00
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yes (51 available). Estimated dispatch time: up to 3 days
Project: Ultra-LD Mk.4 200W RMS Power Amplifier: Preview
Project: Ultra-LD Mk.4 200W RMS Power Amplifier, Pt.1
Project: Ultra-LD Mk.4 200W RMS Power Amplifier, Pt.2
Project: Ultra-LD Mk.4 Power Amplifier, Pt.3: 110W Version
Other items relevant for these projects:
Ultra-LD Mk3/Mk4 Amplifier Power Supply PCB 
Ultra-LD Mk.4 Amplifier PCB [01107151 RevC]
Ultra-LD Mk.4 Amplifier prototype PCB [01107151 RevB]
2 x HN3A51F + 1 x HN3C51F dual transistors for the Ultra-LD Mk.4 Power Amplifier module
Ultra-LD Mk.3 Power Supply PCB pattern (PDF download) 
Ultra-LD Mk.4 Amplifier PCB pattern (PDF download) [01107151 RevC]
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