Difference between revisions of "MHS-5200A DDS Signal Generator"
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== Replace Wall-wart Power Supply == | == Replace Wall-wart Power Supply == | ||
| − | * Wall warts put AC on the | + | * Wall warts put AC on the BNC grounds. |
| − | ** Fix it by replacing with an AC/DC linear supply | + | ** Fix it by replacing with an AC/DC linear supply |
| + | * '''Diodes backwards on silkscreen/image''' | ||
[[File:MHS-5200A_PwrSupply.png]] | [[File:MHS-5200A_PwrSupply.png]] | ||
| + | |||
| + | === Parts === | ||
* [https://www.mouser.com/ProductDetail/553-F14X POWER XFMR 6.3Vct@1.2A 115V CHASSIS MOUNT w/LEADS/F-14X ] | * [https://www.mouser.com/ProductDetail/553-F14X POWER XFMR 6.3Vct@1.2A 115V CHASSIS MOUNT w/LEADS/F-14X ] | ||
* [https://www.mouser.com/ProductDetail/511-LF50ABV LF50ABV Voltage Regulator 5.0V 0.5A Positive] | * [https://www.mouser.com/ProductDetail/511-LF50ABV LF50ABV Voltage Regulator 5.0V 0.5A Positive] | ||
| + | ** Won;t work since unit draws 550 mA | ||
| + | ** Using 7805 | ||
* 3x [https://www.mouser.com/ProductDetail/710-860020375018 Aluminum Electrolytic Capacitors - Radial Leaded WCAP-ATG5 1200uF 16V 20% Radial] | * 3x [https://www.mouser.com/ProductDetail/710-860020375018 Aluminum Electrolytic Capacitors - Radial Leaded WCAP-ATG5 1200uF 16V 20% Radial] | ||
* 4x [https://www.mouser.com/ProductDetail/583-1N5822-T 1N5822-T Schottky Diodes & Rectifiers Vr/40V Io/3A T/R] | * 4x [https://www.mouser.com/ProductDetail/583-1N5822-T 1N5822-T Schottky Diodes & Rectifiers Vr/40V Io/3A T/R] | ||
| + | ** '''Silkscreen cathode stripe on wrong end''' - Kicad library problem | ||
* 2x 5mm terminal blocks | * 2x 5mm terminal blocks | ||
| − | === Simulation | + | == Installation == |
| + | |||
| + | * Plenty of room inside | ||
| + | |||
| + | [[File:Pwr-Sply-Repl-P17210-720px.jpg]] | ||
| + | |||
| + | * Inside view of rear panel | ||
| + | |||
| + | [[File:Pwr-Sply-Repl-P17212-720px.jpg]] | ||
| + | |||
| + | * Fit AC socket/switch where DC switch was located | ||
| + | |||
| + | [[File:Pwr-Sply-Repl-P17207-720px.jpg]] | ||
| + | |||
| + | * Cut with tin snips | ||
| + | * File for tight fit | ||
| + | * With AC socket/switch installed | ||
| + | |||
| + | [[File:Pwr-Sply-Repl-P17217-720px.jpg]] | ||
| + | |||
| + | * With transformer/Power Supply board installed and wired | ||
| + | |||
| + | [[File:Pwr-Sply-Repl-P17223-720px.jpg]] | ||
| + | |||
| + | * Power switch close-up | ||
| + | * DC switch looped back | ||
| + | |||
| + | [[File:Pwr-Sply-Repl-P17226-720px.jpg]] | ||
| + | |||
| + | * Works | ||
| + | |||
| + | [[File:Pwr-Sply-Repl-P17229-720px.jpg]] | ||
| + | |||
| + | == Simulation == | ||
6.8Vrms = 9.615V peak | 6.8Vrms = 9.615V peak | ||
[[File:SimResults-01.PNG]] | [[File:SimResults-01.PNG]] | ||
| + | |||
| + | == Reviews / Fixes == | ||
| + | |||
| + | * [http://www.analogzoo.com/2016/08/revisiting-the-mhs5200a/ Revisiting the MHS5200A] | ||
| + | * [http://www.analogzoo.com/2015/08/fixing-the-mhs-5200a/ Fixing the MHS-5200A] | ||
| + | |||
| + | <video type="youtube">TQXd7u4kPvs</video> | ||
| + | |||
| + | <video type="youtube">WfC0h8XhA4w</video> | ||
| + | |||
| + | <video type="youtube">-xOKNi8M3xE</video> | ||
Latest revision as of 16:33, 8 November 2020
Replace Wall-wart Power Supply
- Wall warts put AC on the BNC grounds.
- Fix it by replacing with an AC/DC linear supply
- Diodes backwards on silkscreen/image
Parts
- POWER XFMR 6.3Vct@1.2A 115V CHASSIS MOUNT w/LEADS/F-14X
- LF50ABV Voltage Regulator 5.0V 0.5A Positive
- Won;t work since unit draws 550 mA
- Using 7805
- 3x Aluminum Electrolytic Capacitors - Radial Leaded WCAP-ATG5 1200uF 16V 20% Radial
- 4x 1N5822-T Schottky Diodes & Rectifiers Vr/40V Io/3A T/R
- Silkscreen cathode stripe on wrong end - Kicad library problem
- 2x 5mm terminal blocks
Installation
- Plenty of room inside
- Inside view of rear panel
- Fit AC socket/switch where DC switch was located
- Cut with tin snips
- File for tight fit
- With AC socket/switch installed
- With transformer/Power Supply board installed and wired
- Power switch close-up
- DC switch looped back
- Works
Simulation
6.8Vrms = 9.615V peak
Reviews / Fixes
