Replica of the then quite popular EPROM burner "DELA EPROMMER II". From an old broken circuit board I designed this reconstruction.
It can be burned in the original state with this programming adapter the EPROM types 2716 to 27256, as well as the CMOD variants of it.
With an appropriate modification you can then even program 27512 EPROMs.
The DELA EPROMMER II was at that time also my preferred way to program EPROMs. Unfortunately the original was destroyed by a too long storage in the cellar. But for reasons of nostalgia I have rebuilt the programming adapter once again.
The board is completely equipped with components for through-hole mounting, as it was back then. There are also no special requirements. The parts are all commercially available and still easy to get in any better sorted electronics store.
Even for beginners this board should not make any problems with mounting and soldering.
The circuit board viewed from above:
Here is the list of components needed. I have chosen the manufacturers as examples. Of course, compatible components from other manufacturers can also be selected.
| Quantity | Designator | Manufacturer | Manufacturer Part Number | Description |
|---|---|---|---|---|
| 1 | D4 | NTE Electronics | 1N752A | Zener Diode 5.6V 1/2 Watt 5% Do-35 Case |
| 4 | D7, D8, D9, D10 | ON Semiconductor / Fairchild | 1N4002 | DIODE GEN PURP 100V 1A DO41 |
| 3 | D1, D5, D6 | NXP Semiconductors | 1N4148 | NEXPERIA - 1N4148 - DIODE, 1N4148 AMMO-BOX 10K |
| 1 | D3 | ON Semiconductor / Fairchild | 1N5236B | FAIRCHILD SEMICONDUCTOR 1N5236B Zener Single Diode, 7.5 V, 500 mW, DO-35, 5 %, 2 Pins, 200 C |
| 1 | D2 | ON Semiconductor / Fairchild | 1N5237B | ZENER DIODE, 500mW, 8.2V, DO-35; Zener Voltage Vz Typ:8.2V; Power Dissipation Pd:500mW; Diode Case Style:DO-35; Zener Tolerance :5%; No. of Pins:2Pins; Operating Temperature Max:200 C; Packaging:Each; Breakdown Voltage:8.2V ;RoHS Compliant: Yes |
| 1 | U1 | 3M | 228-4817-00-0602J | CONN IC DIP SOCKET ZIF 28POS GLD |
| 1 | LED1 | Wurth Electronics | 151033RS03000 | WURTH ELEKTRONIK 151033RS03000 LED, 3MM, RED, 2600MCD, 621NM |
| 6 | Q1, Q2, Q3, Q4, Q6, Q7 | Multicomp | BC237B | MULTICOMP BC237B Bipolar (BJT) Single Transistor, NPN, 45 V, 200 MHz, 350 mW, 100 mA, 290 |
| 1 | Q5 | ON Semiconductor / Fairchild | BC558BTA | FAIRCHILD SEMICONDUCTOR BC558BTA Bipolar (BJT) Single Transistor, PNP, -30 V, 150 MHz, 500 mW, -100 mA, 200 hFE |
| 2 | U2, U3 | Texas Instruments | CD4040BE | Counter/Divider Single 12-Bit Binary UP 16-Pin PDIP Tube |
| 2 | R9, R11 | Yageo | CFR-25JB-52-1K | RES 1K OHM 1/4W 5% AXIAL |
| 9 | R2, R3, R4, R5, R6, R7, R8, R10, R12 | Yageo | CFR-25JB-52-10K | RES 10K OHM 1/4W 5% AXIAL |
| 1 | R1 | Yageo | CFR-25JB-52-680K | Res 680K Ohm 1/4W 5% Axial |
| 1 | CP3 | Panasonic | ECA1EHG101 | Capacitor 100 uF 25 VDC, ECA1EHG101, Panasonic Automotive & Industrial Systems |
| 2 | CP2, CP4 | Panasonic | ECA-1HHG471 | Capacitor 470 uF 50 VDC, ECA1HHG471, Panasonic Automotive & Industrial Systems |
| 1 | CP5 | Panasonic | ECA-1VHG471 | ALUMINUM ELECTROLYTIC CAPACITOR, 470UF, 35V, 20%, RADIAL; Product Range:NHG Series; Capacitance:470 F; Capacitance Tolerance: 20%; Voltage Rating:35V; Diameter:10mm; Capacitor Terminals:Radial Leaded; Packaging:Each; ESR:- ;RoHS Compliant: Yes |
| 1 | U6 | STMicroelectronics | L7805CV | STMICROELECTRONICS - L7806CV - LINEAR VOLTAGE REGULATOR 5V TO-220-3 |
| 1 | CP1 | RND Components | RND 150EHR100M16B | RND 150EHR100M16B - Kondensator, 10µF, 16V, 20%, RND Components |
| 1 | U4 | Texas Instruments | SN74LS06N | IC INVERTER OPEN COL 6CH 14DIP |
| 1 | U5 | Texas Instruments | SN74LS373N | Latch Transparent 3-ST 8-CH D-Type 20-Pin PDIP Tube |
The PCB can either be ordered directly from PCBWay, or you can create it yourself from the Gerber files available here.
If you liked my project, I would be very happy about a small coffee donation.
The contents of this repository, with the exception of the Docs and Software directories, are released under the following license:
- the "Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License" (CC BY-NC-SA 4.0) full text of this license is included in the LICENSE.CC-NC-BY-SA-4.0 file and a copy can also be found at https://creativecommons.org/licenses/by-nc-sa/4.0/